magnesite

Name:

magnesite

A photo of the mineral magnesite

Class:

Carbonates

Chemistry:

MgCO3 Magnesium Carbonate

Color(s):

white, yellowish, brownish, Streak: white

Hardness:

3.5 - 4.5

SpecGrav:

2.9 - 3.1

Fracture:

conchoidal

Cleavage:

perfect in 3 directions

Crystal:

hexagonal (usually rhombohedral) distinct xtals are are

Envronment:

at contact zone of metamorphics, with hydrothermal metamorphics, and hydrothermal replacements

Association:

brucite, calcite, aragonite, talc, chlorite

Locals:

| Austria | Italy | China | USSR | Nevada, California / USA |

Misc:

soluble in warm HCl, sometimes fluorescence, cryptic Latin "magneus carneus", "flesh magnet"

Photos
& Locals:

1.) Brumado, Bahia, Brazil
2.) Brumado, Bahia, Brazil
3.) Brumado, Bahia, Brazil

4.) Brumado, Bahia, Brazil
5.) Brumado, Bahia, Brazil

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Name:	magnesite
Class:	Carbonates
Chemistry:	MgCO3 Magnesium Carbonate
Color(s):	white, yellowish, brownish, Streak: white
Hardness:	3.5 - 4.5	SpecGrav:	2.9 - 3.1
Fracture:	conchoidal	Cleavage:	perfect in 3 directions
Crystal:	hexagonal (usually rhombohedral) distinct xtals are are
Envronment:	at contact zone of metamorphics, with hydrothermal metamorphics, and hydrothermal replacements
Association:	brucite, calcite, aragonite, talc, chlorite
Locals:	\| Austria \| Italy \| China \| USSR \| Nevada, California / USA \|
Misc:	soluble in warm HCl, sometimes fluorescence, cryptic Latin "magneus carneus", "flesh magnet"

	Photos & Locals:
		1.) Brumado, Bahia, Brazil 2.) Brumado, Bahia, Brazil 3.) Brumado, Bahia, Brazil		4.) Brumado, Bahia, Brazil 5.) Brumado, Bahia, Brazil

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