Polycrase-(Y)
A synonym of Euxenite-(Y)
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About Polycrase-(Y)
Formula:
Y(Ti,Nb)2(O,OH)6
Lustre:
Vitreous, Greasy, Sub-Metallic
Hardness:
5 - 6
Specific Gravity:
4.9 - 5.1
Crystal System:
Orthorhombic
Name:
From the Greek πολύς, many, and κράσις, mixture, referring to the large number of elements present in the mineral.
Synonym:
A synonym of Euxenite-(Y)
Metamict (X-ray amorphous) mineral that is mainly found in pegmatites. Polycrase-(Y) has been discredited, as it is identical to euxenite-(Y), and the latter mineral has historical priority.
May be confused with aeschynite-(Y), which has a similar composition and may be partly metamict, depending on its U and Th contents.
May be confused with aeschynite-(Y), which has a similar composition and may be partly metamict, depending on its U and Th contents.
Unique Identifiers
Mindat ID:
3257 (as Polycrase-(Y))
1425 (as Euxenite-(Y))
1425 (as Euxenite-(Y))
Long-form identifier:
mindat:1:1:3257:1 (as Polycrase-(Y))
mindat:1:1:1425:6 (as Euxenite-(Y))
mindat:1:1:1425:6 (as Euxenite-(Y))
GUID
(UUID V4):
(UUID V4):
a3aa7503-07a6-42fa-8648-a7fa254917fe (as Polycrase-(Y))
3ef27e33-959c-405a-9951-ed2d56ea9d9e (as Euxenite-(Y))
3ef27e33-959c-405a-9951-ed2d56ea9d9e (as Euxenite-(Y))
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
| Symbol | Source | Reference |
|---|---|---|
| Plc-Y | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
| Plc | The Canadian Mineralogist (2019) | The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download |
Pronunciation of Polycrase-(Y)
Pronunciation:
| Play | Recorded by | Country |
|---|---|---|
| Jolyon Ralph | United Kingdom |
Internet Links for Polycrase-(Y)
mindat.org URL:
https://www.mindat.org/min-3257.html
Please feel free to link to this page.
Please feel free to link to this page.
References for Polycrase-(Y)
Reference List:
Veisdal feldspar quarry, Hidra, Flekkefjord, Agder, Norway