acanthite

Name:

acanthite (argentite)

A photo of the mineral acanthite

Class:

Sulfides

Chemistry:

Ag2S

Color(s):

lead-gray to black - metallic

Hardness:

2-2.5

SpecGrav:

7.2-7.4

Fracture:

hacky

Cleavage:

indistinct

Crystal:

isometric, crystals rare - cubes; octahedrons - often in parallel groups

Envronment:

hydrothermal replacement deposits

Association:

barite, bornite, galena and quartz

Locals:

Kongsberg, Norway / Pachuca, Guanajuarato, Mexico / Aspen, Leadville, Co., Nv., USA

Misc:

Named for the Greek word for thorn, akantha. Derived from the crystal form. Argenite comes from the Latin, arentum. meaning silver.

Photos
& Locals:

1.) 415 level, La Sirena Mine, Guanajuato, Mexico
2.) 415 level, La Sirena Mine, Guanajuato, Mexico

3.) 415 level, La Sirena Mine, Guanajuato, Mexico

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Name:	acanthite (argentite)
Class:	Sulfides
Chemistry:	Ag2S
Color(s):	lead-gray to black - metallic
Hardness:	2-2.5	SpecGrav:	7.2-7.4
Fracture:	hacky	Cleavage:	indistinct
Crystal:	isometric, crystals rare - cubes; octahedrons - often in parallel groups
Envronment:	hydrothermal replacement deposits
Association:	barite, bornite, galena and quartz
Locals:	Kongsberg, Norway / Pachuca, Guanajuarato, Mexico / Aspen, Leadville, Co., Nv., USA
Misc:	Named for the Greek word for thorn, akantha. Derived from the crystal form. Argenite comes from the Latin, arentum. meaning silver.

	Photos & Locals:
		1.) 415 level, La Sirena Mine, Guanajuato, Mexico 2.) 415 level, La Sirena Mine, Guanajuato, Mexico		3.) 415 level, La Sirena Mine, Guanajuato, Mexico

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