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Pentagonite On Heulandite

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SHW693480

Pentagonite On Heulandite

Description Tabs

Description
Locality: 
Wagholi Quarry, Pune, Maharashtra, India
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4 × 5.5 × 4.5 cm
Weight: 
80.00gr
Description

Christmas tree like formation of dark blue crystals of pentagonite in geode of heulandite.

Wagholi, Pune - India is the only one location in the whole world, where best quality cavansite & pentagonite is found. Due to expansion of localities around, mines are almost on the verge of closing down.

Mineral Data
What's on the rock

Pentagonite

Formula: 
Ca(VO)Si4O10·4H2O
Strunz: 
9.EA.55
Hardness: 
3.0 - 4.0
Type Locality: 
Owyhee Dam, Lake Owyhee State Park, Malheur Co., Oregon, USA

Heulandite

Synonym Of: 

Heulandite-Ba

Formula: 
(Ba,Ca,K,Na,Sr)5Al9Si27O72·22H2O
Strunz: 
9.GE.05
Hardness: 
3.5

Heulandite-Ca

Formula: 
(Ca,Na)2-3Al3(Al,Si)2Si13O36·12H2O
Strunz: 
9.GE.05
Hardness: 
3.5 - 4.0

Heulandite-K

Formula: 
(K,Na,Ca)2-3Al3(Al,Si)2Si13O36·12H2O
Strunz: 
9.GE.05
Hardness: 
3.0 - 3.5

Heulandite-Na

Formula: 
(Na,Ca)2-3Al3(Al,Si)2Si13O36·12H2O
Strunz: 
9.GE.05
Hardness: 
3.0 - 3.5

Heulandite-Sr

Formula: 
(Sr,Na,Ca)2-3Al3(Al,Si)2Si13O36·12H2O
Strunz: 
9.GE.05
Hardness: 
3.0 - 3.5
Hardness: 
3 - 3.5
Colour: 
White
Streak: 
White
Not Sold

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