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Ashcroftine-(Y) from
Narssârssuk pegmatite, Narsaarsuk Plateau, Igaliku, Kujalleq, Greenland


09054120017364045763105.jpg
Ashcroftine-(Y), etc.

Narssârssuk pegmatite, Narsaarsuk Plateau, Igaliku, Kujalleq, Greenland
08758610017272000541083.jpg
Ashcroftine-(Y)

Narssârssuk pegmatite, Narsaarsuk Plateau, Igaliku, Kujalleq, Greenland
00549410017272000595183.jpg
Ashcroftine-(Y)

Narssârssuk pegmatite, Narsaarsuk Plateau, Igaliku, Kujalleq, Greenland
04580170017272000569774.jpg
Ashcroftine-(Y)

Narssârssuk pegmatite, Narsaarsuk Plateau, Igaliku, Kujalleq, Greenland
09054120017364045763105.jpg
Ashcroftine-(Y), etc.

Narssârssuk pegmatite, Narsaarsuk Plateau, Igaliku, Kujalleq, Greenland
08140860017367935133439.jpg
Ashcroftine-(Y)

Narssârssuk pegmatite, Narsaarsuk Plateau, Igaliku, Kujalleq, Greenland
08116290017367935299758.jpg
Ashcroftine-(Y)

Narssârssuk pegmatite, Narsaarsuk Plateau, Igaliku, Kujalleq, Greenland
02343420017367935222752.jpg
Ashcroftine-(Y)

Narssârssuk pegmatite, Narsaarsuk Plateau, Igaliku, Kujalleq, Greenland
09054120017364045763105.jpg
Ashcroftine-(Y), etc.

Narssârssuk pegmatite, Narsaarsuk Plateau, Igaliku, Kujalleq, Greenland
08758610017272000541083.jpg
Ashcroftine-(Y)

Narssârssuk pegmatite, Narsaarsuk Plateau, Igaliku, Kujalleq, Greenland
00549410017272000595183.jpg
Ashcroftine-(Y)

Narssârssuk pegmatite, Narsaarsuk Plateau, Igaliku, Kujalleq, Greenland
04580170017272000569774.jpg
Ashcroftine-(Y)

Narssârssuk pegmatite, Narsaarsuk Plateau, Igaliku, Kujalleq, Greenland
Locality type:Pegmatite
Classification
Species:Ashcroftine-(Y)
Formula:K5Na5(Y,Ca)12Si28O70(OH)2(CO3)8 · 8H2O
Habit: incoherent mass of acicular crystals, rarely measuring more than 4 mm in length, and 0.25 mm in thickness
Colour:vinaceous-pink in color; probably due to the 0.85% MnO present
Confirmation
Validity:Valid - Type Locality
Associated Minerals Based on Photo Data:
Graphite1
Data
Mineral Data:Click here to view Ashcroftine-(Y) data
Locality Data:Click here to view Narssârssuk pegmatite, Narsaarsuk Plateau, Igaliku, Kujalleq, Greenland
Photo GalleryView Gallery (8 photos)
Data Identifiers
Mindat Occurrence Record ID:1262
Long-form Identifier:1:3:1262:1
GUID (UUID V4):0
References
Nature (1932) 130, p. 858.
Hey, Max H., Bannister, F. A. (1933) Studies on the zeolites. Part IV. Ashcroftine (kalithomsonite of S. G. Gordon) Mineralogical Magazine and Journal of the Mineralogical Society, 23 (140) 305-308 doi:10.1180/minmag.1933.023.140.02
Bøggild, O. B. (1953) The Mineralogy of Greenland. Meddelelser om Grønland Vol. 149 (3) C.A.Reitzelpp.410-411
 
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