staurolite

Name:

staurolite

A photo of the mineral staurolite

Class:

Silicates

Chemistry:

Fe2Al9Si4O22(OH)2 Hydros Ferrous Aluminum Silicate

Color(s):

yellow-brown, reddish to brownish, black

Hardness:

7 - 7.5

SpecGrav:

3.7 - 3.8

Fracture:

conchoidal

Cleavage:

incomplete

Crystal:

monoclinic (in single or very often twinned crystals, often in the general shape of a cross) 60 or 90 degrees

Envronment:

metamorphic rocks.

Association:

garnets, kyanite, andalusite, quartz

Locals:

| USSR | France | Austria | Switzerland | Scotland | Namibia | Tennessee, New Hampshire, Georgia, USA |

Misc:

The name is derived from the Greek word "stauros", meaning "cross". It comes from the common cross shaped twinning pattern.

Photos
& Locals:

1.) Blue Ridge, Georgia
2.) Keivy, Kola Peninula, Russia

3.) Keivy, Kola Peninula, Russia
4.) Keivy, Kola Peninula, Russia

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Name:	staurolite
Class:	Silicates
Chemistry:	Fe2Al9Si4O22(OH)2 Hydros Ferrous Aluminum Silicate
Color(s):	yellow-brown, reddish to brownish, black
Hardness:	7 - 7.5	SpecGrav:	3.7 - 3.8
Fracture:	conchoidal	Cleavage:	incomplete
Crystal:	monoclinic (in single or very often twinned crystals, often in the general shape of a cross) 60 or 90 degrees
Envronment:	metamorphic rocks.
Association:	garnets, kyanite, andalusite, quartz
Locals:	\| USSR \| France \| Austria \| Switzerland \| Scotland \| Namibia \| Tennessee, New Hampshire, Georgia, USA \|
Misc:	The name is derived from the Greek word "stauros", meaning "cross". It comes from the common cross shaped twinning pattern.

	Photos & Locals:
		1.) Blue Ridge, Georgia 2.) Keivy, Kola Peninula, Russia		3.) Keivy, Kola Peninula, Russia 4.) Keivy, Kola Peninula, Russia

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