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Heulandite & Datolite

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RHT645820

Heulandite & Datolite

ex collection Uwe Nielsen
Classic Locality

Description Tabs

Description
Locality: 
Summit, Union County, New Jersey, United States of America
Class: 
Combination
Size Range: 
Cabinet (10-18 cm)
Size: 
12.9 × 6 × 4.8 cm
Weight: 
406.00gr
Description

Specimen with lots of heulandite crystals and colorless datolite.

Mineral Data
What's on the rock

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

Datolite

Formula: 
Ca(HBSiO5)
Strunz: 
9.AJ.20
Hardness: 
5.0 - 5.5
Streak: 
White
Type Locality: 
Nødebro Mine (Nøddebro), Arendal Iron Mines, Arendal, Aust-Agder, Norway