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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Magnesio-ferri-hornblende from
Zlaté Moravce-1 well, Zlaté Moravce, Zlaté Moravce District, Nitra Region, Slovakia


Locality type:Borehole
Classification
Species:Magnesio-ferri-hornblende
Formula:◻Ca2(Mg4Fe3+)[(Si7Al)O22](OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Magnesio-ferri-hornblende data
Locality Data:Click here to view Zlaté Moravce-1 well, Zlaté Moravce, Zlaté Moravce District, Nitra Region, Slovakia
Data Identifiers
Mindat Occurrence Record ID:1903906
Long-form Identifier:1:3:1903906:8
GUID (UUID V4):0
References
Šarinová, Katarína, Rybár, Samuel (2018) Cummingtonite-bearing volcanic rocks: first evidence in the Central Slovak Volcanic Field. Geologica Carpathica, 69 (4). 335-346 doi:10.1515/geoca-2018-0020
 
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