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Ashcroftine-(Y)
Type Locality
Narsaarsuk pegmatite (Narssârssuk pegmatite), Narsaarsuk Plateau, Igaliku (Igaliko), Narsaq, Kujalleq, Greenland
Mineral Data
K
5
Na
5
(Y,Ca)
12
Si
28
O
70
(OH)
2
(CO
3
)
8
·8H
2
O
Strunz:
9.DN.15
Physical Properties
Colour:
Pink
Crystal System:
Tetragonal
Streak:
White
Hardness:
5.0
Tenacity:
brittle
Synonyms
Synonyms:
Ashcroftine-Y, Ashcroftine Y and Ashcroftine - Y
