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


05004810017363464101573.jpg
Calcite, etc.

Preguiça Mine, Sobral da Adiça, Moura, Beja, Portugal
00403150017272057503380.jpg
Calcite, etc.

Preguiça Mine, Sobral da Adiça, Moura, Beja, Portugal
02568540017272057508362.jpg
Calcite

Preguiça Mine, Sobral da Adiça, Moura, Beja, Portugal
04353710017272057507695.jpg
Calcite

Preguiça Mine, Sobral da Adiça, Moura, Beja, Portugal
05004810017363464101573.jpg
Calcite, etc.

Preguiça Mine, Sobral da Adiça, Moura, Beja, Portugal
08331090017363464106152.jpg
Calcite, etc.

Preguiça Mine, Sobral da Adiça, Moura, Beja, Portugal
00281410017363464113376.jpg
Calcite

Preguiça Mine, Sobral da Adiça, Moura, Beja, Portugal
02810540017363464119038.jpg
Calcite

Preguiça Mine, Sobral da Adiça, Moura, Beja, Portugal
04079530017363464117667.jpg
Calcite, etc.

Preguiça Mine, Sobral da Adiça, Moura, Beja, Portugal
00403150017272057503380.jpg
Calcite, etc.

Preguiça Mine, Sobral da Adiça, Moura, Beja, Portugal
06623340017272057504985.jpg
Calcite

Preguiça Mine, Sobral da Adiça, Moura, Beja, Portugal
04353710017272057507695.jpg
Calcite

Preguiça Mine, Sobral da Adiça, Moura, Beja, Portugal
Locality type:Mine
Classification
Species:Calcite
Formula:CaCO3
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Descloizite134
Willemite103
- var Beta-Willemite4
Plattnerite37
Goethite22
Hydrozincite15
Limonite13
Mimetite12
Smithsonite4
Jasper3
Cerussite3
Dolomite2
Hemimorphite1
Aragonite1
Coronadite1
Hematite1
Quartz1
Data
Mineral Data:Click here to view Calcite data
Locality Data:Click here to view Preguiça Mine, Sobral da Adiça, Moura, Beja, Portugal
Photo GalleryView Gallery (131 photos)
Data Identifiers
Mindat Occurrence Record ID:275262
Long-form Identifier:1:3:275262:4
GUID (UUID V4):0
Nearest other occurrences of Calcite
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
20.9km (13.0 miles) ⓘAparis Mine, Barrancos, Barrancos, Beja, Portugal
26.8km (16.7 miles) ⓘOrdem Lírios Mine, Barrancos, Barrancos, Beja, Portugal
27.9km (17.3 miles) ⓘOrada Mine, Pias, Serpa, Beja, Portugal
40.6km (25.2 miles) ⓘCabeça Alta Mines, Monsaraz, Reguengos de Monsaraz, Évora, Portugal
43.8km (27.2 miles) ⓘHerdade da Ventosa Mine, Nossa Senhora das Neves, Beja, Beja, Portugal
46.2km (28.7 miles) ⓘAlgares Mine, Portel, Portel, Évora, Portugal
47.2km (29.3 miles) ⓘBalsa Mine, Santana, Portel, Évora, Portugal
52.4km (32.5 miles) ⓘFilón Norte open pit (Filón Norte Mine), Tharsis Mines, Tharsis, Alosno, Huelva, Andalusia, Spain
References
Martins da Silva, J. & de Araújo, C. (1948): Estudo da concessão Umbria da Preguiça e dos campos livres Herdade da Preguiça, sítio do Álamo e Herdade do Álamo. Estudos, Notas, Trabalhos de Servico de Fomento Mineiro, 4(3-4), 197-209.
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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