Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
5.5-6.03.15-3.259
1
7.18
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Fracture
Conchoidal
-
Cleavage
{001} Distinct
Gedrite Magnesiogedrite , Comments: Dark gray cleavage fragment of magnesiogedrite (gedrite). , Location: Bamble, Telemark, Norway. , Scale: See Image.
Mohs Hardness
6.55.5-6
2
10
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Chemical Composition
ZrO 2Arthur Thomas , Gemstones (2009)
(Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)