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Neptunite & Joaquinite-(Ce)

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CHP872935

Neptunite & Joaquinite-(Ce)

Classic Locality

Description Tabs

Description
Locality: 
California State Gem Mine, San Benito County, California, United States of America
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.5 × 3 × 2.5 cm
Description

acidified specimen with black crystals of neptunite and brownish crystals of joaquinite-(Ce).

c. 2894

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

Joaquinite-(Ce)

Formula: 
NaBa2Ce2FeTi2[Si4O12]2O2(OH,F)·H2O
Strunz: 
9.CE.25
Hardness: 
5.0 - 5.5
Type Locality: 
California State Gem Mine (Dallas Gem Mine; Benitoite Mine; Benitoite Gem Mine; Gem Mine), Dallas Gem Mine area, San Benito River headwaters area, New Idria District, Diablo Range, San Benito Co., California, USA

Seller Information

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