Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Dawsonite from
San Martino sul Fiora mine, San Martino sul Fiora, Manciano, Grosseto Province, Tuscany, Italy


Locality type:Mine
Classification
Species:Dawsonite
Formula:NaAlCO3(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Dawsonite data
Locality Data:Click here to view San Martino sul Fiora mine, San Martino sul Fiora, Manciano, Grosseto Province, Tuscany, Italy
Data Identifiers
Mindat Occurrence Record ID:430997
Long-form Identifier:1:3:430997:0
GUID (UUID V4):0
Nearest other occurrences of Dawsonite
4.4km (2.8 miles) ⓘCatabbio mine, Catabbio, Semproniano, Grosseto Province, Tuscany, Italy
7.4km (4.6 miles) ⓘCortevecchia Mine, Semproniano, Grosseto Province, Tuscany, Italy
13.2km (8.2 miles) ⓘSiele-Carpine mine (Siele mine; Carpine mine), Piancastagnaio, Siena Province, Tuscany, Italy
13.8km (8.6 miles) ⓘLe Solforate Mine (Solforate Rosselli Mine), Piancastagnaio, Siena Province, Tuscany, Italy
14.3km (8.9 miles) ⓘAbetina-Argus Mine, Piancastagnaio, Siena Province, Tuscany, Italy
19.7km (12.2 miles) ⓘBagnore Mine (Le Bagnore Mine), Santa Fiora, Grosseto Province, Tuscany, Italy
71.8km (44.6 miles) ⓘLa Mercareccia, Canale Monterano, Metropolitan City of Rome Capital, Lazio, Italy
References
Meli, R. (2000): L'antica miniera antimonifera di S. Martino sul Fiora, Mancianese (Grosseto). Rivista Mineralogica Italiana, 2/2000, 111-113.
 
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