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Opal from
Rio Pian del Foco, Olbicella, Molare, Alessandria Province, Piedmont, Italy


Classification
Species:Opal
Formula:SiO2 · nH2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Opal data
Locality Data:Click here to view Rio Pian del Foco, Olbicella, Molare, Alessandria Province, Piedmont, Italy
Data Identifiers
Mindat Occurrence Record ID:156296
Long-form Identifier:1:3:156296:5
GUID (UUID V4):0
Nearest other occurrences of Opal
6.4km (4.0 miles) ⓘVeirera, Sassello, Savona Province, Liguria, Italy
10.9km (6.8 miles) ⓘFasciun, Mt. Argentea, Arenzano, Genoa, Liguria, Italy
15.1km (9.4 miles) ⓘI Piani, Masone, Genoa, Liguria, Italy
21.0km (13.1 miles) ⓘVarenna Valley, Genoa, Genoa, Liguria, Italy
23.8km (14.8 miles) ⓘMt. Ramazzo Mine, Borzoli, Genoa, Genoa, Liguria, Italy
47.9km (29.8 miles) ⓘMotta fossil wood occurrence, Tanaro River, Costigliole d'Asti, Asti Province, Piedmont, Italy
57.6km (35.8 miles) ⓘPizzocorno, Ponte Nizza, Pavia Province, Lombardy, Italy
72.2km (44.9 miles) ⓘGambatesa Mine, Reppia, Ne, Genoa, Liguria, Italy
73.3km (45.5 miles) ⓘMolinello Mine, Ne, Genoa, Liguria, Italy
73.6km (45.7 miles) ⓘNascio, Ne, Genoa, Liguria, Italy
References
Cortesogno L., Lucchetti G., Penco A.M. - 1975 - Associazioni a zeoliti nel "Gruppo di Voltri" : caratteristiche mineralogiche e loro significato - rend. S.I.M.P. - Milano, vol. 31, n.2 pp. 673-710
 
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