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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Chlorite Group from
Segura Mines (Segura mining field), União das Freguesias de Zebreira e Segura, Idanha-a-Nova, Castelo Branco, Portugal


Locality type:Mine
Classification
Species:'Chlorite Group' (not an IMA approved species)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chlorite Group data
Locality Data:Click here to view Segura Mines (Segura mining field), União das Freguesias de Zebreira e Segura, Idanha-a-Nova, Castelo Branco, Portugal
Data Identifiers
Mindat Occurrence Record ID:942408
Long-form Identifier:1:3:942408:1
GUID (UUID V4):0
Nearest other occurrences of Chlorite Group
67.6km (42.0 miles) ⓘSierra de San Pedro, Cáceres, Cáceres, Extremadura, Spain
85.4km (53.1 miles) ⓘS. Martinho, Crato e Mártires Flor da Rosa e Vale do Peso, Crato, Portalegre, Portugal
89.9km (55.9 miles) ⓘCabeço de Vide ultramafic complex, Alter do Chão, Portalegre, Portugal
95.8km (59.5 miles) ⓘÁguila area (Fé mine), Saelices el Chico, Salamanca, Castile and Leon, Spain
References
Neiva, A. M. R., Silva, M. M. V. G., Antunes, I. M. H. R., Ramos, J. M. F. (2001) Phosphate minerals of some granitic rocks and associated quartz veins from Northern and Central Portugal. Journal of the Czech Geological Society, 46 (1-2) 35-44
Gaspar, Miguel, Grácio, Nuno, Salgueiro, Rute, Costa, Mafalda (2022) Trace Element Geochemistry of Alluvial TiO2 Polymorphs as a Proxy for Sn and W Deposits. Minerals, 12 (10) 1248 doi:10.3390/min12101248
 
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