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Calcite & Stellerite

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MGR687723

Calcite & Stellerite

Description Tabs

Description
Locality: 
Sarbai Deposit, Rudny, Kostanay Region, Kazakhstan
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
15.8 × 9.2 × 7 cm
Description

Sharp terminated, exposed and highly lustrous light calcite crystals (up to 49mm across) with amazing texture attractively set on matrix. Matrix is partly covered with tiny stellerite crystals. Looks great in each angle, no significant damages to report.

Mineral Data
What's on the rock

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White

Stellerite

Formula: 
Ca4(Si28Al8)O72·28H2O
Strunz: 
9.GE.15
Hardness: 
4.5
Type Locality: 
Mednyi Island, Commander Islands (Komandorskije ostrova), Bering Sea, Kamchatka Oblast', Far-Eastern Region, Russia...