Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Brochantite from
Geufron Mine, Llanidloes, Powys, Wales, UK


Locality type:Mine
Classification
Species:Brochantite
Formula:Cu4(SO4)(OH)6
Comments:Xls to 0.5mm
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Brochantite data
Locality Data:Click here to view Geufron Mine, Llanidloes, Powys, Wales, UK
Data Identifiers
Mindat Occurrence Record ID:39017
Long-form Identifier:1:3:39017:0
GUID (UUID V4):0
Nearest other occurrences of Brochantite
8.1km (5.0 miles) ⓘDyfngwm mine, Penegoes, Powys, Wales, UK
8.4km (5.2 miles) ⓘPenycrocben, Penegoes, Powys, Wales, UK
8.7km (5.4 miles) ⓘDylife Mine (Pen Dylife Mine; Esgairgaled Mine; Llechwedd Ddu Mine; Blaen Twymyn Mine), Dylife, Machynlleth, Powys, Wales, UK
9.1km (5.6 miles) ⓘCythfartha Mine, Penegoes, Powys, Wales, UK
13.6km (8.5 miles) ⓘCwmystwyth Mine, Cwmystwyth, Upper Llanfihangell-y-Creuddyn, Ceredigion, Wales, UK
14.1km (8.8 miles) ⓘBryn-yr-Afr Mine, Ponterwyd, Trefeirig, Ceredigion, Wales, UK
15.0km (9.3 miles) ⓘHenfwlch Mine, Tal-y-bont, Ceulanymaesmawr, Ceredigion, Wales, UK
15.3km (9.5 miles) ⓘEaglebrook Mine, Tal-y-bont, Ceulanymaesmawr, Ceredigion, Wales, UK
16.2km (10.0 miles) ⓘEsgair Hir & Esgair Fraith mines (Cambrian Mine; Cardigan Consolidated Mine; Welsh Potosi Mine; Kylon Potosi Mine), Tal-y-bont, Ceulanymaesmawr, Ceredigion, Wales, UK
16.3km (10.1 miles) ⓘPenrhiw Mine (Penyberth Mine), Ystumtuen, Cwmrheidol, Ceredigion, Wales, UK
References
S.Rust Collection
 
and/or  
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