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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Dolomite from
Preguiça Mine, Sobral da Adiça, Moura, Beja, Portugal


09116080017272074703406.jpg
Dolomite, etc.

Preguiça Mine, Sobral da Adiça, Moura, Beja, Portugal
01304600017369151868364.jpg
Dolomite, etc.

Preguiça Mine, Sobral da Adiça, Moura, Beja, Portugal
03834470017272074711299.jpg
Dolomite, etc.

Preguiça Mine, Sobral da Adiça, Moura, Beja, Portugal
06372300017272074717340.jpg
Dolomite, etc.

Preguiça Mine, Sobral da Adiça, Moura, Beja, Portugal
09116080017272074703406.jpg
Dolomite, etc.

Preguiça Mine, Sobral da Adiça, Moura, Beja, Portugal
01304600017369151868364.jpg
Dolomite, etc.

Preguiça Mine, Sobral da Adiça, Moura, Beja, Portugal
03834470017272074711299.jpg
Dolomite, etc.

Preguiça Mine, Sobral da Adiça, Moura, Beja, Portugal
06372300017272074717340.jpg
Dolomite, etc.

Preguiça Mine, Sobral da Adiça, Moura, Beja, Portugal
06775640017272074724385.jpg
Dolomite, etc.

Preguiça Mine, Sobral da Adiça, Moura, Beja, Portugal
01304600017369151868364.jpg
Dolomite, etc.

Preguiça Mine, Sobral da Adiça, Moura, Beja, Portugal
09479200017272074721777.jpg
Dolomite, etc.

Preguiça Mine, Sobral da Adiça, Moura, Beja, Portugal
06372300017272074717340.jpg
Dolomite, etc.

Preguiça Mine, Sobral da Adiça, Moura, Beja, Portugal
Locality type:Mine
Classification
Species:Dolomite
Formula:CaMg(CO3)2
Confirmation
Validity:Confirmed
Confirmation Methods:Visually Identified
Associated Minerals Based on Photo Data:
Descloizite11
Goethite8
Smithsonite3
Plattnerite3
Calcite2
Data
Mineral Data:Click here to view Dolomite data
Locality Data:Click here to view Preguiça Mine, Sobral da Adiça, Moura, Beja, Portugal
Photo GalleryView Gallery (13 photos)
Data Identifiers
Mindat Occurrence Record ID:784397
Long-form Identifier:1:3:784397:6
GUID (UUID V4):0
Nearest other occurrences of Dolomite
1.0km (0.6 miles) ⓘHerdade de Vila Ruiva Mine, Sobral da Adiça, Moura, Beja, Portugal
10.7km (6.6 miles) ⓘRuy Gomes Mine, Santo Agostinho, Moura e Santo Amador, Moura, Beja, Portugal
19.5km (12.1 miles) ⓘBotefa Mine, Barrancos, Barrancos, Beja, Portugal
20.9km (13.0 miles) ⓘAparis Mine, Barrancos, Barrancos, Beja, Portugal
26.8km (16.7 miles) ⓘOrdem Lírios Mine, Barrancos, Barrancos, Beja, Portugal
27.0km (16.8 miles) ⓘDefesa das Mercês Mine, Barrancos, Barrancos, Beja, Portugal
43.8km (27.2 miles) ⓘHerdade da Ventosa Mine, Nossa Senhora das Neves, Beja, Beja, Portugal
55.1km (34.2 miles) ⓘFonte de António Medeiro Mine, Mértola, Mértola, Beja, Portugal
56.6km (35.2 miles) ⓘPoço Moreno Mine, Mértola, Mértola, Beja, Portugal
58.6km (36.4 miles) ⓘLas Herrerías deposit, Alconchel, Badajoz, Extremadura, Spain
References
Martins da Pedra collection
Pimentel, R., Nunes, R. & De Ascenção, R.(2007): Les minéraux d'altération de plomb (Pb) et zinc (Zn) du massif de Preguiça, Moura, Portugal. Le Règne Minéral, 75, 19-26.
Silva, Teresa P.; Morais, Igor; Soares, Sofia; Rodrigues, Ivo; Oliveira, Daniel P. S.; Mirão, José (2026) New Contributions to Mineralogical and Geochemical Knowledge of Old Preguiça Mine, Beja, Portugal. Minerals, 16 (4). doi:10.3390/min16040348
 
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