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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Cassiterite from
Cerro Queimado, União das Freguesias de Zebreira e Segura, Idanha-a-Nova, Castelo Branco, Portugal


Locality type:Mining Area
Classification
Species:Cassiterite
Formula:SnO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Cassiterite data
Locality Data:Click here to view Cerro Queimado, União das Freguesias de Zebreira e Segura, Idanha-a-Nova, Castelo Branco, Portugal
Data Identifiers
Mindat Occurrence Record ID:1615077
Long-form Identifier:1:3:1615077:7
GUID (UUID V4):0
Nearest other occurrences of Cassiterite
1.3km (0.8 miles) ⓘSegura Mines (Segura mining field), União das Freguesias de Zebreira e Segura, Idanha-a-Nova, Castelo Branco, Portugal
26.5km (16.5 miles) ⓘGranite outcrop, União de Freguesias de Monsanto e Idanha-a-Velha, Idanha-a-Nova, Castelo Branco, Portugal
27.8km (17.3 miles) ⓘRibeiro das Cantarinhas No. 1 Mine, União de Freguesias de Monsanto e Idanha-a-Velha, Idanha-a-Nova, Castelo Branco, Portugal
27.8km (17.3 miles) ⓘFonte do Casal Pelado Mine, União de Freguesias de Monsanto e Idanha-a-Velha, Idanha-a-Nova, Castelo Branco, Portugal
28.3km (17.6 miles) ⓘTapada dos Carvalhos e Carvalhal Mines, União de Freguesias Idanha-a-Nova e Alcafozes, Idanha-a-Nova, Castelo Branco, Portugal
28.9km (17.9 miles) ⓘFonte Monsantela Mine, União de Freguesias de Monsanto e Idanha-a-Velha, Idanha-a-Nova, Castelo Branco, Portugal
32.3km (20.1 miles) ⓘFaísca Mine, Medelim, Idanha-a-Nova, Castelo Branco, Portugal
35.5km (22.0 miles) ⓘMatas da Rainha Mines - Carvoeira e Senhora da Granja, Proença-a-Velha, Idanha-a-Nova, Castelo Branco, Portugal
36.2km (22.5 miles) ⓘRoncões and Fonte Serrana Mines, União de Freguesias de Escalos de Cima e Lousa, Castelo Branco, Castelo Branco, Portugal
41.9km (26.0 miles) ⓘMata da Rainha Mine, União de Freguesias de Pedrogão de S Pedro e Bemposta, Penamacor, Castelo Branco, Portugal
References
Cathelineau, Michel, Boiron, Marie-Christine, Lecomte, Andreï, Martins, Ivo, Silva, Ícaro Dias da, Mateus, Antonio (2024) Lithium-, Phosphorus-, and Fluorine-Rich Intrusions and the Phosphate Sequence at Segura (Portugal): A Comparison with Other Hyper-Differentiated Magmas. Minerals, 14 (3) doi:10.3390/min14030287
 
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