galena

Name:

galena

A photo of the mineral galena

Class:

Sulfides

Chemistry:

PbS Lead Sulfide

Color(s):

metallic-submetallic gray

Hardness:

2.5 - 3.0

SpecGrav:

7.2 - 7.6

Fracture:

conchoidal

Cleavage:

perfect

Crystal:

cubic (cubes, octahedrons, often twinned)

Envronment:

pegmatites, high temperature to low temperature hydrothermal veins, replacements in chalks

Association:

sphalerite, chalcopyrite, pyrite, barite, fluorite,calcite

Locals:

Germany | Austria | Zambia | Canada | Idaho, Colorado, Mo., USA |

Misc:

soluble in HCl when heated (toxic gas produced), Dissolves in Nitric Acid producing small flakes of Sulfur, and a fine white precipitate (lead sulfate). Dark gray streak.

Photos
& Locals:

1.) Reynolds Co., Mo.
2.) Reynolds Co., Mo.
3.) Reynolds Co., Mo.
4.) Reynolds Co., Mo.
5.) Reynolds Co., Mo.

6.) Reynolds Co., Mo.
7.) Reynolds Co., Mo.
8.) Reynolds Co., Mo.
9.) Reynolds Co., Mo.

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Name:	galena
Class:	Sulfides
Chemistry:	PbS Lead Sulfide
Color(s):	metallic-submetallic gray
Hardness:	2.5 - 3.0	SpecGrav:	7.2 - 7.6
Fracture:	conchoidal	Cleavage:	perfect
Crystal:	cubic (cubes, octahedrons, often twinned)
Envronment:	pegmatites, high temperature to low temperature hydrothermal veins, replacements in chalks
Association:	sphalerite, chalcopyrite, pyrite, barite, fluorite,calcite
Locals:	Germany \| Austria \| Zambia \| Canada \| Idaho, Colorado, Mo., USA \|
Misc:	soluble in HCl when heated (toxic gas produced), Dissolves in Nitric Acid producing small flakes of Sulfur, and a fine white precipitate (lead sulfate). Dark gray streak.

	Photos & Locals:
		1.) Reynolds Co., Mo. 2.) Reynolds Co., Mo. 3.) Reynolds Co., Mo. 4.) Reynolds Co., Mo. 5.) Reynolds Co., Mo.		6.) Reynolds Co., Mo. 7.) Reynolds Co., Mo. 8.) Reynolds Co., Mo. 9.) Reynolds Co., Mo.

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