Magnesite

Formula	MgCO3
Origin	Brumado Bahia (Brasilien)
Description	translucent magnesite
Classification (Lapis)	Carbonates
Crystal System	trigonal
Hardness	3,5 – 4,5
Colour	white, pale yellow, pale brown, faintly pink, lilac-rose; colorless in transmitted light
Streak	white
Luminescence	yellowish white
Luster	vitreous
Transparency (Opacity)	transparent to translucent
Cleavage	perfect
Fracture	conchoidal
Magnetism	negative
Geological Setting	a primary mineral in igneous or sedimentary rocks; formed by metamorphism or alteration of serpentine and peridotite
Specific Gravity	3,01 g/cm3