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Glauconite On Jasper

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SMM767221

Glauconite On Jasper

Analysed

Description Tabs

Description
Locality: 
Sarghentalzu Mine, Padria, Sassari Province, Sardinia, Italy
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.5 × 1 × 1 cm
Description

Green velvet tufts of glauconite crystals stand out on a red jasper matrix. From an old (2005) personal find only recently analized, the sample come from an obscure locality of the Sardinia inland. Good for the specie.

Boxed with Label
Mineral Data
What's on the rock

Glauconite

Formula: 
(K,Na)(Fe3+,Al,Mg)2(Si,Al,Fe3+)4O10)(OH)2
Hardness: 
2.0
Streak: 
None

Jasper

Variety Of: 

Chalcedony

Hardness: 
6.5 - 7.0
Hardness: 
0.0

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