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Semenovite-(Ce) & Epididymite

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CR117210

Semenovite-(Ce) & Epididymite

Rare Mineral

Description Tabs

Description
Locality: 
Taseq Slope, Ilimaussaq, Narsaq, Kujalleq, Greenland
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.3 × 3.5 × 3.5 cm
Description

Sharp pale brown semenovite crystals on a bed of tabular epididymite crystals in vugs.

Rare !

Mineral Data
What's on the rock

Semenovite-(Ce)

Formula: 
Na8Ca2FeBe6Ce2Si14O40(OH)4F4
Strunz: 
9.DN.10
Hardness: 
3.5 - 4.0
Streak: 
White
Type Locality: 
Taseq Slope (Tasseq Slope), Taseq area, Ilímaussaq complex, Narsaq, Kujalleq, Greenland

Epididymite

Formula: 
Na2Be2Si6O15·H2O
Strunz: 
9.DG.55
Crystal System: 
Orthorhombic
Hardness: 
5.5
Type Locality: 
Narsaarsuk pegmatite (Narssârssuk pegmatite), Narsaarsuk Plateau, Igaliku (Igaliko), Narsaq, Kujalleq, Greenland