orpiment

Name:

orpiment

A photo of the mineral orpiment

Class:

Sulfides

Chemistry:

As2S3 Arsenic Sulfide

Color(s):

lemon-yellow, orange, orange-brownish

Hardness:

1.5 - 2.0

SpecGrav:

3.4 - 3.5

Fracture:

bladed

Cleavage:

complete

Crystal:

monoclinic (poorly formed and crystals are rare. Crystals are prismatic or tabular when present. Often granular or encrusting.)

Envronment:

a sublimation product in fumaroles, and a byproduct of the decay of realgar.

Association:

realgar,stibnite,pyrite,sphalerite,calcite

Locals:

| USSR | Germany | Switzerland | Utah, Nevada, USA | Hungary | Italy | Turkey | China |

Misc:

The name is derived from the Latin "auripigmentium", relating to the minerals "goldish color". Soluble in nitric acid.

Photos
& Locals:

1.) E Gold Pick Pit, Roberts Mtns, Eurika Co., Nevada
2.) E Gold Pick Pit, Roberts Mtns, Eurika Co., Nevada CloseUp
3.) E Gold Pick Pit, Roberts Mtns, Eurika Co., Nevada

4.) E Gold Pick Pit, Roberts Mtns, Eurika Co., Nevada CloseUp
5.) Quiruvllca, Peru

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Name:	orpiment
Class:	Sulfides
Chemistry:	As2S3 Arsenic Sulfide
Color(s):	lemon-yellow, orange, orange-brownish
Hardness:	1.5 - 2.0	SpecGrav:	3.4 - 3.5
Fracture:	bladed	Cleavage:	complete
Crystal:	monoclinic (poorly formed and crystals are rare. Crystals are prismatic or tabular when present. Often granular or encrusting.)
Envronment:	a sublimation product in fumaroles, and a byproduct of the decay of realgar.
Association:	realgar,stibnite,pyrite,sphalerite,calcite
Locals:	\| USSR \| Germany \| Switzerland \| Utah, Nevada, USA \| Hungary \| Italy \| Turkey \| China \|
Misc:	The name is derived from the Latin "auripigmentium", relating to the minerals "goldish color". Soluble in nitric acid.

	Photos & Locals:
		1.) E Gold Pick Pit, Roberts Mtns, Eurika Co., Nevada 2.) E Gold Pick Pit, Roberts Mtns, Eurika Co., Nevada CloseUp 3.) E Gold Pick Pit, Roberts Mtns, Eurika Co., Nevada		4.) E Gold Pick Pit, Roberts Mtns, Eurika Co., Nevada CloseUp 5.) Quiruvllca, Peru

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