Toxic Rocks

There are a number of rocks, gems, or minerals that when handled, cut, ground, or ingested can be toxic.

When handling: radioactive, heavy metals, water soluble
When cutting or grinding: asbestos, silica, metal
When ingested: soluble in acid

When cutting or grinding any of the below listed rocks that have an inhalation risk, wear a respirator with a NIOSH rating of at least N95.

Minimum required filters are P95, but P100 is better for silica.

For radioactive rocks, limit handling and wash your hands afterwards. Built up radon is a risk, so store them outdoors if at all possible. Micromounts are fine in the small plastic boxes. Larger pieces you may want to keep in a lead-lined box (you can build this with lead sheets).

Source: An Overview of Mineral's Toxicity
Mineralogy Database

Name	Ingestion	Inhalation	Skin Contact	Radioactive	Reacts with Acid	Hazardous Element	Warning	Precautions
Acanthite		High			X	Hydrogen Sulfide Nitrogen Dioxide
Actinolite							Inhalation of dust (fibers) of the asbesiform variety is hazardous	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Ahlfeldite	Low	Low				Selenium	Bioavailable form	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Alaite	Moderate	Moderate				Vanadium	Bioavailable form Water soluble	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Albrittonite						Cobalt	Bioavailable form	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Amosite							Inhalation of dust (fibers) of the asbesiform variety is hazardous	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Andersonite				High		Uranium		Never lick or ingest Minimize manipulations Wear disposable nitrile gloves Wash hands immediately after handling Never generate dust by grinding or sawing Avoid long exposures at close distance Do not store in rooms where you spend most of your time Store in a well-ventilated area Keep away from food/kitchen Keep in limited quantities
Anorthominasragrite	Moderate					Vanadium		Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Anthophyllite							Inhalation of dust (fibers) of the asbesiform variety is hazardous	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Antigorite							Inhalation of dust (fibers) of the asbesiform variety is hazardous	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Arsenolite	High	High				Arsenic	Bioavailable form Water soluble	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Arsenopyrite		High			X	Hydrogen Sulfide Nitrogen Dioxide
Autunite				High		Uranium		Never lick or ingest Minimize manipulations Wear disposable nitrile gloves Wash hands immediately after handling Never generate dust by grinding or sawing Avoid long exposures at close distance Do not store in rooms where you spend most of your time Store in a well-ventilated area Keep away from food/kitchen Keep in limited quantities
Avicennite	High	High				Thallium	Bioavailable form	Never lick or ingest Wash hands after handling Do NOT generate dust by grinding or sawing
Azurite						Copper	Bioavailable form	Do NOT ingest Avoid generating dust by grinding or sawing (cut it wet and apply dust control measures)
Babanekite	Moderate					Arsenic	Bioavailable form	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Balyakinite	Low					Tellurium	Bioavailable from	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Bararite	Moderate	Moderate	Moderate			Fluorine	Bioavailable form Water soluble	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing Avoid prolonged skin contact
Behoite	Moderate	High				Beryllium	Bioavailable form	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Betafite				High		Uranium		Never lick or ingest Minimize manipulations Wear disposable nitrile gloves Wash hands immediately after handling Never generate dust by grinding or sawing Avoid long exposures at close distance Do not store in rooms where you spend most of your time Store in a well-ventilated area Keep away from food/kitchen Keep in limited quantities
Bieberite						Cobalt	Bioavailable form	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Bobjonesite	Moderate					Vanadium		Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Boltwoodite				High		Uranium		Never lick or ingest Minimize manipulations Wear disposable nitrile gloves Wash hands immediately after handling Never generate dust by grinding or sawing Avoid long exposures at close distance Do not store in rooms where you spend most of your time Store in a well-ventilated area Keep away from food/kitchen Keep in limited quantities
Bonattite						Copper	Bioavailable form Water soluble	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Boothite						Copper	Bioavailable form Water soluble	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Bornite		High			X	Hydrogen Sulfide Nitrogen Dioxide
Bournonite		High			X	Hydrogen Sulfide Nitrogen Dioxide
Braunite		High			X	Chlorine Gas
Bromellite	Moderate	High				Beryllium	Bioavailable form	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Calciodelrioite	Toxic	Moderate				Vanadium	Bioavailable form Water soluble	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Calomel	Moderate					Mercury	Bioavailable form	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Carlinite	Moderate					Thallium	Bioavailable form	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Carnotite				High		Uranium		Never lick or ingest Minimize manipulations Wear disposable nitrile gloves Wash hands immediately after handling Never generate dust by grinding or sawing Avoid long exposures at close distance Do not store in rooms where you spend most of your time Store in a well-ventilated area Keep away from food/kitchen Keep in limited quantities
Carobbiite	Moderate	Moderate	Moderate			Fluorine	Bioavailable form Water soluble	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing Avoid prolonged skin contact
Castellaroite	Moderate					Arsenic	Bioavailable form	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Chalcanthite						Copper	Bioavailable form Water soluble	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Chalcocite		High			X	Hydrogen Sulfide Nitrogen Dioxide
Chalcocyanite						Copper	Bioavailable form Water soluble	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Chalcomenite	Toxic	Toxic				Selenium	Bioavailable form	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Chalcopyrite		High			X	Hydrogen Sulfide Nitrogen Dioxide
Chromatite	Moderate					Chromium		Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Chrysotile							Inhalation of dust (fibers) of the asbesiform variety is hazardous	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Chursinite	Toxic					Arsenic Mercury	Bioavailable form	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing Avoid prolonged skin contact
Cinnabar	Low	High			X	Mercury Hydrogen Sulfide Nitrogen Dioxide		Do NOT heat Avoid dry-grinding and dry-sawing Beware that native mercury might be present
Claudetite	High	High				Arsenic	Bioavailable form Water soluble	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Cliffordite				High		Uranium		Never lick or ingest Minimize manipulations Wear disposable nitrile gloves Wash hands immediately after handling Never generate dust by grinding or sawing Avoid long exposures at close distance Do not store in rooms where you spend most of your time Store in a well-ventilated area Keep away from food/kitchen Keep in limited quantities
Clinobehoite	Moderate	High				Beryllium	Bioavailable form	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Clinochalcomenite	Toxic	Toxic				Selenium	Bioavailable form	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Cobaltite		High			X	Hydrogen Sulfide Nitrogen Dioxide
Cobaltkieserite						Cobalt	Bioavailable form	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Cobaltomenite	Toxic	Toxic				Selenium	Bioavailable form	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Coccinite	High	High	High			Mercury	Bioavailable form Volatile at ambient temperature	Never lick, ingest, or sniff Avoid skin contact Wear disposable nitrile gloves Wash hands immediately after handling Do NOT generate dust by grinding or sawing Keep in an airtight box away from heat
Coconinoite				High		Uranium		Never lick or ingest Minimize manipulations Wear disposable nitrile gloves Wash hands immediately after handling Never generate dust by grinding or sawing Avoid long exposures at close distance Do not store in rooms where you spend most of your time Store in a well-ventilated area Keep away from food/kitchen Keep in limited quantities
Covellite		High			X	Hydrogen Sulfide Nitrogen Dioxide
Crocidolite							Inhalation of dust (fibers) of the asbesiform variety is hazardous	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Crocoite	Low					Chromium		Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Cryolite	High	High	High		X	Hydrofluoric Acid
Cryptohalite	Moderate	Moderate	Moderate			Fluorine	Bioavailable form Water soluble	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing Avoid prolonged skin contact
Cuprosklodowskit				High		Uranium		Never lick or ingest Minimize manipulations Wear disposable nitrile gloves Wash hands immediately after handling Never generate dust by grinding or sawing Avoid long exposures at close distance Do not store in rooms where you spend most of your time Store in a well-ventilated area Keep away from food/kitchen Keep in limited quantities
Cylindrite		High			X	Hydrogen Sulfide Nitrogen Dioxide
Demartinite	Moderate	Moderate	Moderate			Fluorine	Bioavailable form Water soluble	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing Avoid prolonged skin contact
Dorallcharite	Moderate					Thallium	Bioavailable form	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Downeyite	High	High				Selenium	Bioavailable form Water Soluble	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Drobecite	Moderate	High				Cadmium	Bioavailable form Water soluble	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Emmonsite	Low					Tellurium	Bioavailable from	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Enargite		High			X	Hydrogen Sulfide Nitrogen Dioxide
Eriochalcite						Copper	Bioavailable form Water soluble	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Erionite							Inhalation of dust (fibers) of the asbesiform variety is hazardous	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Fluorapatite	High	High	High		X	Hydrofluoric Acid
Fluorite	High	High	High		X	Hydrofluoric Acid
Fluoro-edenite							Inhalation of dust (fibers) of the asbesiform variety is hazardous	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Galena		High			X	Hydrogen Sulfide Nitrogen Dioxide
Gersdorffite		High			X	Hydrogen Sulfide Nitrogen Dioxide
Graemite	Low					Tellurium	Bioavailable from	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Griceite	Moderate	Moderate				Fluorine	Bioavailable form	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Haidingerite	Toxic	Moderate				Arsenic	Bioavailable form	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Hausmannite		High			X	Chlorine Gas
Hieratite	Moderate	Moderate	Moderate			Fluorine	Bioavailable form Water soluble	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing Avoid prolonged skin contact
Hoganite						Copper	Bioavailable form Water soluble	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Hornesite	Moderate					Arsenic		Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Jamesonite		High			X	Hydrogen Sulfide Nitrogen Dioxide
Kleinite	Toxic					Mercury	Bioavailable form	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing Avoid prolonged skin contact
Kröhnkite						Copper	Bioavailable form Water soluble	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Kuznetsovite	Toxic					Arsenic Mercury	Bioavailable form	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing Avoid prolonged skin contact
Lafossaite	High	High				Thallium	Bioavailable form Water soluble	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Lammerite	Moderate					Arsenic		Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Lanmuchangite	Moderate					Thallium	Bioavailable form	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Lazaridisite	Moderate	High				Cadmium	Bioavailable form Water soluble	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Lopezite	Toxic	High				Hexavalent chromium	Bioavailable form Water soluble	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Magnesio-riebeckite							Inhalation of dust (fibers) of the asbesiform variety is hazardous	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Malachite						Copper	Bioavailable form	Do NOT ingest Avoid generating dust by grinding or sawing (cut it wet and apply dust control measures)
Malladrite	Moderate	Moderate	Moderate			Fluorine	Bioavailable form Water soluble	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing Avoid prolonged skin contact
Mandarinoite	Low	Low				Selenium	Bioavailable form	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Manganite		High			X	Chlorine Gas
Marcasite		High			X	Hydrogen Sulfide Nitrogen Dioxide
Meta-Ankloeite				High		Uranium		Never lick or ingest Minimize manipulations Wear disposable nitrile gloves Wash hands immediately after handling Never generate dust by grinding or sawing Avoid long exposures at close distance Do not store in rooms where you spend most of your time Store in a well-ventilated area Keep away from food/kitchen Keep in limited quantities
Meta-Autunite				High		Uranium		Never lick or ingest Minimize manipulations Wear disposable nitrile gloves Wash hands immediately after handling Never generate dust by grinding or sawing Avoid long exposures at close distance Do not store in rooms where you spend most of your time Store in a well-ventilated area Keep away from food/kitchen Keep in limited quantities
Metamunirite	Toxic	Moderate				Vanadium	Bioavailable form Water soluble	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Metarossite	Toxic	Moderate				Vanadium	Bioavailable form Water soluble	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Metatorbernite				High		Uranium		Never lick or ingest Minimize manipulations Wear disposable nitrile gloves Wash hands immediately after handling Never generate dust by grinding or sawing Avoid long exposures at close distance Do not store in rooms where you spend most of your time Store in a well-ventilated area Keep away from food/kitchen Keep in limited quantities
Metauranocircite				High		Uranium		Never lick or ingest Minimize manipulations Wear disposable nitrile gloves Wash hands immediately after handling Never generate dust by grinding or sawing Avoid long exposures at close distance Do not store in rooms where you spend most of your time Store in a well-ventilated area Keep away from food/kitchen Keep in limited quantities
Metazeunerite				High		Uranium		Never lick or ingest Minimize manipulations Wear disposable nitrile gloves Wash hands immediately after handling Never generate dust by grinding or sawing Avoid long exposures at close distance Do not store in rooms where you spend most of your time Store in a well-ventilated area Keep away from food/kitchen Keep in limited quantities
Millerite		High			X	Hydrogen Sulfide Nitrogen Dioxide
Millsite	Low					Tellurium	Bioavailable from	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Minium		High			X	Chlorine Gas
Moctezumite				High		Uranium		Never lick or ingest Minimize manipulations Wear disposable nitrile gloves Wash hands immediately after handling Never generate dust by grinding or sawing Avoid long exposures at close distance Do not store in rooms where you spend most of your time Store in a well-ventilated area Keep away from food/kitchen Keep in limited quantities
Molybdenite		High			X	Hydrogen Sulfide Nitrogen Dioxide
Molybdomenite	Low	Low				Selenium	Bioavailable form	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Monazite				Low		Cerium Lanthanum Neodymium Phosphorous Thorium Uranium Yttrium		Never lick or ingest Minimize manipulations Wear disposable nitrile gloves Wash hands immediately after handling Never generate dust by grinding or sawing Avoid long exposures at close distance Do not store in rooms where you spend most of your time Store in a well-ventilated area Keep away from food/kitchen Keep in limited quantities
Monteponite	Moderate	High				Cadmium	Bioavailable form	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Montroydite	High	High	High			Mercury	Bioavailable form	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing Avoid prolonged skin contact
Morenosite						Nickel	Bioavailable form Water soluble	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Moschelite	Moderate					Mercury	Bioavailable form	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing Avoid prolonged skin contact
Munirite	Toxic	Moderate				Vanadium	Bioavailable form Water soluble	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Nantokite						Copper	Bioavailable form Water soluble	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Native Arsenic						Arsenic	Bioavailable form	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Native Mercury	High	High				Mercury	Evaporates at ambient temperature	Keep in an airtight box away from heat Never lick or ingest Wash hands immediately after handling Avoid generating dust by grinding or sawing the associated matrix
Nemalite							Inhalation of dust (fibers) of the asbesiform variety is hazardous	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Nestolaite	High	High				Selenium	Bioavailable form	Never lick or ingest Wash hands after handling Do NOT generate dust by grinding or sawing
Nickelbischofite						Nickel	Bioavailable form Water soluble	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Nitrobarite						Barium	Bioavailable form Water soluble	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Orpiment						Arsenic	Bioavailable form	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing Be aware that arsenolite (highly toxic) may be present in some powdery/crumbly massive samples
Orpiment		High			X	Hydrogen Sulfide Nitrogen Dioxide
Orthominasragrite	Moderate					Vanadium		Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Palygorskite							Inhalation of dust (fibers) of the asbesiform variety is hazardous	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Pauflerite	Moderate					Vanadium		Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Pentlandite		High			X	Hydrogen Sulfide Nitrogen Dioxide
Pharmacolite	Toxic	Moderate				Arsenic	Bioavailable form	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Phaunoxite	Moderate	Moderate				Arsenic	Bioavailable form	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Phosphuranylite				High		Uranium		Never lick or ingest Minimize manipulations Wear disposable nitrile gloves Wash hands immediately after handling Never generate dust by grinding or sawing Avoid long exposures at close distance Do not store in rooms where you spend most of your time Store in a well-ventilated area Keep away from food/kitchen Keep in limited quantities
Plattnerite		High			X	Chlorine Gas
Proustite		High			X	Hydrogen Sulfide Nitrogen Dioxide
Pyrargyrite		High			X	Hydrogen Sulfide Nitrogen Dioxide
Pyrite		High			X	Hydrogen Sulfide Nitrogen Dioxide
Pyrolusite		High			X	Chlorine Gas
Pyrrohotite		High			X	Hydrogen Sulfide Nitrogen Dioxide
Quartz							Long-term inhalation of quartz dust can lead to silicosis	Avoid dry-sawing and dry grinding If regularly exposed, apply dust control measures
Radian Barite				High		Radium		Never lick or ingest Minimize manipulations Wear disposable nitrile gloves Wash hands immediately after handling Never generate dust by grinding or sawing Avoid long exposures at close distance Do not store in rooms where you spend most of your time Store in a well-ventilated area Keep away from food/kitchen Keep in very limited quantity
Rauenthalite	Moderate	Moderate				Arsenic	Bioavailable form	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Realgar	Low	High			X	Arsenic Hydrogen Sulfide Nitrogen Dioxide		Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Reinerite	Moderate					Arsenic		Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Retgersite						Nickel	Bioavailable form Water soluble	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Richertite							Inhalation of dust (fibers) of the asbesiform variety is hazardous	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Rollandite	Moderate					Arsenic		Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Rossite	Toxic	Moderate				Vanadium	Bioavailable form Water soluble	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Scacchite						Manganese	Bioavailable form Water soluble	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Schmitterite				High		Uranium		Never lick or ingest Minimize manipulations Wear disposable nitrile gloves Wash hands immediately after handling Never generate dust by grinding or sawing Avoid long exposures at close distance Do not store in rooms where you spend most of your time Store in a well-ventilated area Keep away from food/kitchen Keep in limited quantities
Schreibersite	Low					Phosphorous		Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Schuetteite	High	High	High			Mercury	Bioavailable form	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing Avoid prolonged skin contact
Schultenite	Moderate	Moderate				Arsenic	Bioavailable form	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Shcherbinaite	Moderate	Moderate				Vanadium	Bioavailable form Water soluble	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Sklodowskite				High		Uranium		Never lick or ingest Minimize manipulations Wear disposable nitrile gloves Wash hands immediately after handling Never generate dust by grinding or sawing Avoid long exposures at close distance Do not store in rooms where you spend most of your time Store in a well-ventilated area Keep away from food/kitchen Keep in limited quantities
Sofiite	Low	Low				Selenium	Bioavailable form	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Sphalerite		High			X	Hydrogen Sulfide Nitrogen Dioxide
Stanleyite	Moderate					Vanadium		Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Steropesite	Moderate					Thallium	Bioavailable form	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Stibioclaudetite	Moderate	Moderate				Arsenic	Bioavailable form	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Stibnite		High			X	Hydrogen Sulfide Nitrogen Dioxide
Tarapacaite	Toxic	High				Hexavalent chromium	Bioavailable form Water soluble	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Teineite	Low					Tellurium	Bioavailable from	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Tennantite		High			X	Hydrogen Sulfide Nitrogen Dioxide
Terlinguaite						Mercury	Bioavailable form	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing Avoid prolonged skin contact
Tetrahedrite		High			X	Hydrogen Sulfide Nitrogen Dioxide
Thorite				High		Thorium Uranium		Never lick or ingest Minimize manipulations Wear disposable nitrile gloves Wash hands immediately after handling Never generate dust by grinding or sawing Avoid long exposures at close distance Do not store in rooms where you spend most of your time Store in a well-ventilated area Keep away from food/kitchen Keep in limited quantities
Thorogummite				High		Thorium Uranium		Never lick or ingest Minimize manipulations Wear disposable nitrile gloves Wash hands immediately after handling Never generate dust by grinding or sawing Avoid long exposures at close distance Do not store in rooms where you spend most of your time Store in a well-ventilated area Keep away from food/kitchen Keep in limited quantities
Tolbachite						Copper	Bioavailable form Water soluble	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Torbernite				High		Uranium		Never lick or ingest Minimize manipulations Wear disposable nitrile gloves Wash hands immediately after handling Never generate dust by grinding or sawing Avoid long exposures at close distance Do not store in rooms where you spend most of your time Store in a well-ventilated area Keep away from food/kitchen Keep in limited quantities
Tremolite							Inhalation of dust (fibers) of the asbesiform variety is hazardous	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Tyuyamunite				High		Uranium		Never lick or ingest Minimize manipulations Wear disposable nitrile gloves Wash hands immediately after handling Never generate dust by grinding or sawing Avoid long exposures at close distance Do not store in rooms where you spend most of your time Store in a well-ventilated area Keep away from food/kitchen Keep in limited quantities
Uraninite				High		Uranium		Never lick or ingest Minimize manipulations Wear disposable nitrile gloves Wash hands immediately after handling Never generate dust by grinding or sawing Avoid long exposures at close distance Do not store in rooms where you spend most of your time Store in a well-ventilated area Keep away from food/kitchen Keep in limited quantities
Uranocircite				High		Uranium		Never lick or ingest Minimize manipulations Wear disposable nitrile gloves Wash hands immediately after handling Never generate dust by grinding or sawing Avoid long exposures at close distance Do not store in rooms where you spend most of your time Store in a well-ventilated area Keep away from food/kitchen Keep in limited quantities
Uranophane				High		Uranium		Never lick or ingest Minimize manipulations Wear disposable nitrile gloves Wash hands immediately after handling Never generate dust by grinding or sawing Avoid long exposures at close distance Do not store in rooms where you spend most of your time Store in a well-ventilated area Keep away from food/kitchen Keep in limited quantities
Uranopilite				High		Uranium		Never lick or ingest Minimize manipulations Wear disposable nitrile gloves Wash hands immediately after handling Never generate dust by grinding or sawing Avoid long exposures at close distance Do not store in rooms where you spend most of your time Store in a well-ventilated area Keep away from food/kitchen Keep in limited quantities
Vanadinite	Low					Vanadium		Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Villiaumite	Moderate	Moderate				Fluorine	Bioavailable form Water soluble	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Voudourisite	Moderate	High				Cadmium	Bioavailable form Water soluble	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Walpurgite				High		Uranium		Never lick or ingest Minimize manipulations Wear disposable nitrile gloves Wash hands immediately after handling Never generate dust by grinding or sawing Avoid long exposures at close distance Do not store in rooms where you spend most of your time Store in a well-ventilated area Keep away from food/kitchen Keep in limited quantities
Weilite	Toxic	Moderate				Arsenic	Bioavailable form	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Winchite							Inhalation of dust (fibers) of the asbesiform variety is hazardous	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Witherite						Barium	Bioavailable form	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Zeunerite				High		Uranium		Never lick or ingest Minimize manipulations Wear disposable nitrile gloves Wash hands immediately after handling Never generate dust by grinding or sawing Avoid long exposures at close distance Do not store in rooms where you spend most of your time Store in a well-ventilated area Keep away from food/kitchen Keep in limited quantities
Zincomenite	Low	Low				Selenium	Bioavailable form	Never lick or ingest Wash hands immediately after handling Do NOT generate dust by grinding or sawing
Zippeite				High		Uranium		Never lick or ingest Minimize manipulations Wear disposable nitrile gloves Wash hands immediately after handling Never generate dust by grinding or sawing Avoid long exposures at close distance Do not store in rooms where you spend most of your time Store in a well-ventilated area Keep away from food/kitchen Keep in limited quantities

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