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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Sillimanite from
Striebornica, Moravany nad Váhom, Piešťany District, Trnava Region, Slovakia


Classification
Species:Sillimanite
Formula:Al2(SiO4)O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Sillimanite data
Locality Data:Click here to view Striebornica, Moravany nad Váhom, Piešťany District, Trnava Region, Slovakia
Data Identifiers
Mindat Occurrence Record ID:1488073
Long-form Identifier:1:3:1488073:1
GUID (UUID V4):0
Nearest other occurrences of Sillimanite
49.1km (30.5 miles) ⓘDubová calcsilicate outcrops, Dubová, Pezinok District, Bratislava Region, Slovakia
75.0km (46.6 miles) ⓘKremnica Au-Ag deposit, Kremnica, Žiar nad Hronom District, Banská Bystrica Region, Slovakia
86.7km (53.9 miles) ⓘDobrá Niva andesite quarry, Dobrá Niva, Zvolen District, Banská Bystrica Region, Slovakia
88.8km (55.2 miles) ⓘBreziny quarry, Breziny, Zvolen District, Banská Bystrica Region, Slovakia
References
Novák, M., Uher, P., Černý, P., Siman, P. (2000) Compositional variations in ferrotapiolite + tantalite pairs from the beryl-columbite pegmatite at Moravanynad Váhom, Slovakia. Mineralogy and Petrology, 69 (3) 295-306 doi:10.1007/s007100070025
 
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