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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Copiapite from
Kladno mine, Libušin, Kladno District, Central Bohemian Region, Czech Republic


Locality type:Colliery
Classification
Species:Copiapite
Formula:Fe2+Fe43+(SO4)6(OH)2 · 20H2O
Comments:Considered unconfirmed since analyses by Rost (1937) gave about 3 wt.% MgO.
Confirmation
Validity:Unconfirmed/Questioned
Associated Minerals:
Associates:Lapparentite (of Rost)
Tschermigite
Data
Mineral Data:Click here to view Copiapite data
Locality Data:Click here to view Kladno mine, Libušin, Kladno District, Central Bohemian Region, Czech Republic
Data Identifiers
Mindat Occurrence Record ID:121346
Long-form Identifier:1:3:121346:1
GUID (UUID V4):0
Nearest other occurrences of Copiapite
60.6km (37.6 miles) ⓘVrchoslav fluorite deposit, Vrchoslav, Krupka, Teplice District, Ústí nad Labem Region, Czech Republic
96.7km (60.1 miles) ⓘWilli Agatz mine, Dresden, Saxony, Germany
References
Palache, Charles; Berman, Harry; Frondel, Clifford (1951) The System of Mineralogy (7th ed.) Vol. 2 - Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Etc. John Wiley and Sons.pages 512, 601
 
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