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It's a showdown with rare earth elemental ore Monazite-(Ce) and index mineral Andalusite.
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Siderite from
Cortes Pereira Mine, Alcoutim e Pereiro, Alcoutim, Faro, Portugal


Locality type:Mine
Classification
Species:Siderite
Formula:FeCO3
Confirmation
Validity:Confirmed
Confirmation Methods:Visually Identified
Associated Minerals Based on Photo Data:
Dolomite2
Data
Mineral Data:Click here to view Siderite data
Locality Data:Click here to view Cortes Pereira Mine, Alcoutim e Pereiro, Alcoutim, Faro, Portugal
Photo GalleryView Gallery (3 photos)
Data Identifiers
Mindat Occurrence Record ID:1094047
Long-form Identifier:1:3:1094047:9
GUID (UUID V4):0
Nearest other occurrences of Siderite
16.6km (10.3 miles) Poço Moreno Mine, Mértola, Mértola, Beja, Portugal
18.4km (11.5 miles) Fonte de António Medeiro Mine, Mértola, Mértola, Beja, Portugal
22.4km (13.9 miles) Daroeira Mine, Martim Longo, Alcoutim, Faro, Portugal
23.9km (14.8 miles) Namorados Mines, Namorados, Mértola, Mértola, Beja, Portugal
26.4km (16.4 miles) Cerro do Monte Mine, São João dos Caldeireiros, Mértola, Beja, Portugal
33.4km (20.8 miles) Ventosa (Ferrarias) Mine, São Pedro de Solis e São Sebastião dos Carros, Mértola, Beja, Portugal
36.1km (22.4 miles) Barrigão Mine, Santa Cruz, Almodôvar, Beja, Portugal
36.2km (22.5 miles) Cêrro das Ferrarias, Barrigão Mine, Santa Cruz, Almodôvar, Beja, Portugal
37.2km (23.1 miles) Filón Norte open pit (Filón Norte Mine), Tharsis Mines, Tharsis, Alosno, Huelva, Andalusia, Spain
41.3km (25.7 miles) Neves-Corvo Mine, Santa Bárbara de Padrões, Castro Verde, Beja, Portugal
References
 
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