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


00129860017365664399988.jpg
Siderite

Preguiça Mine, Sobral da Adiça, Moura, Beja, Portugal
03518850017272058474108.jpg
Siderite

Preguiça Mine, Sobral da Adiça, Moura, Beja, Portugal
06056180017272058475099.jpg
Siderite

Preguiça Mine, Sobral da Adiça, Moura, Beja, Portugal
00658070017272074873591.jpg
Siderite

Preguiça Mine, Sobral da Adiça, Moura, Beja, Portugal
00129860017365664399988.jpg
Siderite

Preguiça Mine, Sobral da Adiça, Moura, Beja, Portugal
03518850017272058474108.jpg
Siderite

Preguiça Mine, Sobral da Adiça, Moura, Beja, Portugal
06056180017272058475099.jpg
Siderite

Preguiça Mine, Sobral da Adiça, Moura, Beja, Portugal
04500910017369454926994.jpg
Siderite

Preguiça Mine, Sobral da Adiça, Moura, Beja, Portugal
04662850017369099138089.jpg
Siderite

Preguiça Mine, Sobral da Adiça, Moura, Beja, Portugal
03518850017272058474108.jpg
Siderite

Preguiça Mine, Sobral da Adiça, Moura, Beja, Portugal
06056180017272058475099.jpg
Siderite

Preguiça Mine, Sobral da Adiça, Moura, Beja, Portugal
00658070017272074873591.jpg
Siderite

Preguiça Mine, Sobral da Adiça, Moura, Beja, Portugal
Locality type:Mine
Classification
Species:Siderite
Formula:FeCO3
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Coronadite6
Smithsonite6
Data
Mineral Data:Click here to view Siderite data
Locality Data:Click here to view Preguiça Mine, Sobral da Adiça, Moura, Beja, Portugal
Photo GalleryView Gallery (4 photos)
Data Identifiers
Mindat Occurrence Record ID:275264
Long-form Identifier:1:3:275264:8
GUID (UUID V4):0
Nearest other occurrences of Siderite
1.0km (0.6 miles) ⓘHerdade de Vila Ruiva Mine, Sobral da Adiça, Moura, Beja, Portugal
5.5km (3.4 miles) ⓘPreguiça No. 6 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
27.0km (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
52.4km (32.5 miles) ⓘFilón Norte open pit (Filón Norte Mine), Tharsis Mines, Tharsis, Alosno, Huelva, Andalusia, Spain
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
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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