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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Uvarovite from
Dossi di Franscia, Franscia, Lanzada, Sondrio Province, Lombardy, Italy


Locality type:Hill
Classification
Species:Uvarovite
Formula:Ca3Cr23+(SiO4)3
Comments:Emerald-green garnet crystals in chromitite fissures, traditionally considered “uvarovite” (Sigismund, 1948; Gramaccioli, 1962; De Michele, 1972, and other authors), are actually Cr-bearing andradite with a content in Cr2O3 varying inside the crystals from 9.6% in the core to 0.8% at the rim (Bedognè et al., 1993; Sciesa, 1993).
Confirmation
Validity:Erroneously Reported
Associated Minerals Based on Photo Data:
Andradite2
- var Demantoid2
Asbestos2
Data
Mineral Data:Click here to view Uvarovite data
Locality Data:Click here to view Dossi di Franscia, Franscia, Lanzada, Sondrio Province, Lombardy, Italy
Data Identifiers
Mindat Occurrence Record ID:394305
Long-form Identifier:1:3:394305:2
GUID (UUID V4):0
Nearest other occurrences of Uvarovite
5.5km (3.4 miles) ⓘScerscen Valley, Lanzada, Sondrio Province, Lombardy, Italy
References
Sigismund, P. (1948) Granato e vesuvianite in Val Malenco. Atti della Società italiana di scienze naturali: 87: 145-171.
Gramaccioli, C.M. (1962) I minerali valtellinesi nella raccolta di Pietro Sigismund. Ed. privata, Milano, 179 pp.
De Michele, V. (1974) Guida mineralogica d'Italia. Istituto Geografico De Agostini.
Bedognè, F., Montrasio, A., and Sciesa, E. (1993) I Minerali Della Provincia Di Sondrio: Valmalenco. Bettini, Sondrio, Italia, 275 pp.
Sciesa, E. (1993) Le cromititi della Valmalenco (Alpi Centrali). Il Naturalista Valtellinese - Atti Mus. civ. Stor. nat. Morbegno, 4, 3-9.
 
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