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Allanite Group, Microcline
Specimen ID:
TEX-U5X
Mineral(s)
Allanite Group
:
(A1
2+
REE
3+
)(M1
3+
M2
3+
M3
2+
)O[Si
2
O
7
][SiO
4
](OH)
Microcline
:
K(AlSi
3
O
8
)
Locality
Mindat locality:
Homestake Pass, Boulder Batholith, Jefferson County, Montana, USA
Dimensions
6cm x 3cm x 1.2cm
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“
A large double terminated "floater" crystal of allanite with white microcline feldspar crystals measuring 6.0cm x 3.0cm x 1.2cm from Homestake Pass, Jefferson County, near Butte, Montana.
”
Daniel J. Evanich
- 10th April 2011
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10,445,258 minIDs have been issued as of 9th May 2024 12:06 am UTC