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Ashcroftine-(Y) & Aegirine

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Ashcroftine-(Y) & Aegirine

Analysed
Type Locality

Description Tabs

Description
Locality: 
Narssârssuk Pegmatite, Narsaarsuk Plateau, Igaliku, Kujalleq, Greenland
Class: 
Crystals on Matrix
Size Range: 
Micromount (under 1cm)
Size: 
0.8 × 0.5 × 0.45 cm
Description

Analysed specimen of small, pink crystals of extremly rare (only two locations worldwide!) Ashcroftine-(Y) on dark green Aegirine crystal from Type Locality!

Mineral Data
What's on the rock

Ashcroftine-(Y)

Formula: 
K5Na5(Y,Ca)12Si28O70(OH)2(CO3)8·8H2O
Strunz: 
9.DN.15
Crystal System: 
Tetragonal
Hardness: 
5.0
Colour: 
Pink
Streak: 
White
Type Locality: 
Narsaarsuk pegmatite (Narssârssuk pegmatite), Narsaarsuk Plateau, Igaliku (Igaliko), Narsaq, Kujalleq, Greenland

Aegirine

Formula: 
NaFe3+Si2O6
Group Parent: 
Clinopyroxene Subgroup
Strunz: 
9.DA.25
Crystal System: 
Monoclinic
Hardness: 
6.0
Type Locality: 
Rundemyr, Øvre Eiker, Buskerud, Norway

Seller Information

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