Natural Indian Minerals
Magnesite Minerals

Name and Composition - Magnesium carbonate: MgCO3.

Physical Properties - It is generally white coloured, amorphous, cryptocrystalline and compact minerals with conchoidal fracture. Hardness is 3.5 to 4.5 and sp.gr.is 3.0 to 4.8. Luster is vitreous or pearly in crystals but dull in massive and earthy varieties.

Mode of Occurrence - It occurs as vein and fissure fillings in ultra basic rocks.

Uses - It is a chief source of magnesium metal. Major use in refractory industry. Besides, it is used in chemical, paper, cement, foundry, ferro-alloys, glass, rayon, rubber, ceramic industries, in construction purpose as chips.

Mineral based Industries – Crushers for preparing chips.

Industrial Prospects – Nil.


Physical Properties
Hardness
Sp. gr.
Fusibility
Refractive index
3.5 to 4.5
3.0 to 3.2
Infusible
1.70
Chemical Properties
Chemical formula
Luster
Streak
Tenacity
Fracture
MgCO3
Vitreous
White
Brittle
Conchoidal
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