Hematite Facts - JewelInfo4u

 

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 Hematite Facts
 Author: , 11/29/2004 7:36:56 PM
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Hematite Facts  

Chemical Composition

It is iron oxide and the chemical formula is Fe2O3.

Colours

Steel or silver gray, black, orange, red and brown. Some common shades are blackish gray, brownish red, reddish gray, blackish red. 

Streak

Blood red to brownish red.

Refractive Index

2.87 - 3.15

Specific Gravity

4.95 - 5.26

Luster

Metallic or earthy luster.

Solid State

Opaque.

Crystal System

Trigonal crystal system.

Hardness

Varies between 5.5 - 6.5

Cleavage

None

Fractures

Uneven.

Tenacity

Brittle

Luminescence

None

Birefringence

0.28

Enhancement

No enhancement performed.

Source

United Kingdom, United States, Brazil, Italy, Canada, Newfoundland Germany, Norway, Sweden, Spain, New Zealand, Mexico and Australia.

Precautions

Only general gemstone precautions are required.

 



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JewelInfo4u - Hematite Facts