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Neptunite On Natrolite

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MSD846892

Neptunite On Natrolite

Description Tabs

Description
Locality: 
California State Gem Mine, San Benito County, California, United States of America
Class: 
Combination
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.5 × 2.5 × 2 cm
Largest Crystal: 
1.20cm
Weight: 
9.00gr
Description

This is a pristine and extremely aesthetic combo specimen from the unique deposit in the San Benito County, California, USA.

The crystals are razor sharp and highly lustrous. An asset to every mineral collection.

 

Mineral Data
What's on the rock

Neptunite

Formula: 
Na2KLi(Fe2+,Mn2+)2Ti2(Si8O24)
Strunz: 
9.EH.05
Hardness: 
5.0 - 6.0
Colour: 
Black
Type Locality: 
Narsaarsuk pegmatite (Narssârssuk pegmatite), Narsaarsuk Plateau, Igaliku (Igaliko), Narsaq, Kujalleq, Greenland

Natrolite

Formula: 
Na2Al2Si3O10·2H2O
Strunz: 
9.GA.05
Hardness: 
5.0 - 5.5
Streak: 
White
Type Locality: 
Hohentwiel, Singen, Hegau, Baden-Württemberg, Germany