playfairite
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Playfairite is a rare sulfosalt mineral with chemical formula Pb16Sb18S43 in the monoclinic crystal system, named after the Scottish scientist and mathematician John Playfair. It was discovered in 1966 by the Canadian mineralogist John Leslie Jambor. Lead gray to black in color, its luster is metallic. Playfairite shows strong reflection pleochroism from white to brownish gray. Playfairite has a hardness of 3.5 to 4 on Mohs scale and a specific gravity of approximately 5.72.
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- Nickel-Strunz 9th edition (updated 2009)
- 2.LB.55
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 2.LB.30
- IMA Mineral Symbol
- Pyf
- Commons category
- Playfairite
- chemical formula
- Pb₁₆(Sb,As)₁₉S₄₄Cl
- Strunz 8th edition (series ID, updated)
- II/D.07
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Playfairite is a rare sulfosalt mineral with chemical formula Pb16Sb18S43 in the monoclinic crystal system, named after the Scottish scientist and mathematician John Playfair. It was discovered in 1966 by the Canadian mineralogist John Leslie Jambor. Lead gray to black in color, its luster is metallic. Playfairite shows strong reflection pleochroism from white to brownish gray. Playfairite has a hardness of 3.5 to 4 on Mohs scale and a specific gravity of approximately 5.72.
The type locality is Taylor Pit (Concession XIV; Lot 13), Huntingdon Township, Hastings County in Ontario, Canada. Small deposits have also been found in Les Cougnasses Mine, Orpierre in the Haut-Alpes in France, Khaidarkan Sb-Hg deposit (Chaidarkan), Fergana Valley, Alai Range, Osh Oblast, Kyrgyzstan and Reese River District, Lander County, Nevada, USA.