Vote for your favorite mineral in #MinCup26! - Quartz vs. Asagiite
It's a classic vs a newbie as the most common named mineral in the crust Quartz is up against an exceedingly-rare sea foam-green mineral discovered just a few years ago Asagiite.
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Opal from
Montemassi, Collesalvetti, Livorno Province, Tuscany, Italy


Locality type:Outcrop
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 Montemassi, Collesalvetti, Livorno Province, Tuscany, Italy
Data Identifiers
Mindat Occurrence Record ID:1274791
Long-form Identifier:1:3:1274791:9
GUID (UUID V4):0
Nearest other occurrences of Opal
0.5km (0.3 miles) ⓘPetrified wood occurrence, Collesalvetti, Livorno Province, Tuscany, Italy
0.6km (0.4 miles) ⓘPoggio Corbolone, Livorno, Livorno Province, Tuscany, Italy
1.1km (0.7 miles) ⓘPetrified wood occurrence, Livorno, Livorno Province, Tuscany, Italy
2.9km (1.8 miles) ⓘVia della Sambuca U-V occurrence, Valle Benedetta, Livorno, Livorno Province, Tuscany, Italy
6.2km (3.8 miles) ⓘPoggio alle Fate, Colognole, Collesalvetti, Livorno Province, Tuscany, Italy
8.7km (5.4 miles) ⓘGabbro, Rosignano Marittimo, Livorno Province, Tuscany, Italy
9.1km (5.7 miles) ⓘQuartz occurrences, Gabbro, Rosignano Marittimo, Livorno Province, Tuscany, Italy
9.3km (5.8 miles) ⓘBuca Fonda quarry, Gabbro, Rosignano Marittimo, Livorno Province, Tuscany, Italy
10.7km (6.6 miles) ⓘRogiolo mine, Quercianella, Livorno, Livorno Province, Tuscany, Italy
12.7km (7.9 miles) ⓘFortullino, Rosignano Marittimo, Livorno Province, Tuscany, Italy
References
Sammartino, F. (2013-2014) Primo ritrovamento di Datolite sui Monti Livornesi. Quaderni del Museo di Storia Naturale di Livorno, 25, 25-27.
 
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