Vote for your favorite mineral in #MinCup26! - Hafnon vs. Putnisite
It's a pair of tiny minerals of unusual chemistry as orange Hafnon battles with purple Putnisite.
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Grunerite from
Loch Duich, Ratagain Intrusion, Glenelg, Wester Ross, Strathpeffer and Lochalsh, Highland, Scotland, UK


Locality type:Loch
Classification
Species:Grunerite
Formula:◻Fe22+Fe52+(Si8O22)(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Grunerite data
Locality Data:Click here to view Loch Duich, Ratagain Intrusion, Glenelg, Wester Ross, Strathpeffer and Lochalsh, Highland, Scotland, UK
Data Identifiers
Mindat Occurrence Record ID:1090212
Long-form Identifier:1:3:1090212:3
GUID (UUID V4):0
Nearest other occurrences of Grunerite
4.7km (2.9 miles) ⓘSgurr Aoidhe, Loch Duich, Highland, Scotland, UK
4.9km (3.1 miles) ⓘAllt a Mhuilin, Keppoch, Dornie, Lochalsh, Wester Ross， Strathpeffer and Lochalsh, Highland, Scotland, UK
6.4km (4.0 miles) ⓘCreag Reidh Raineach, Dornie, Lochalsh, Wester Ross， Strathpeffer and Lochalsh, Highland, Scotland, UK
54.7km (34.0 miles) ⓘKerrysdale, Wester Ross， Strathpeffer and Lochalsh, Highland, Scotland, UK
References
Henry, N. F. M. (1935) Some data on the iron-rich hypersthenes. Mineralogical Magazine and Journal of the Mineralogical Society, 24 (151) 221-226 doi:10.1180/minmag.1935.024.151.04
Poldervaart, Arie (1947) The relationship of orthopyroxene to pigeonite. Mineralogical Magazine and Journal of the Mineralogical Society, 28 (198) 164-172 doi:10.1180/minmag.1947.028.198.06 (anal. 18)
Livingstone, A., Macpherson, H. G. (1983) Fifth supplementary list of British minerals (Scottish) Mineralogical Magazine, 47 (342) 99-105 doi:10.1180/minmag.1983.047.342.23
 
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