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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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Aurichalcite from
Cwmystwyth Mine, Cwmystwyth, Upper Llanfihangell-y-Creuddyn, Ceredigion, Wales, UK


04033680017272039312192.jpg
Aurichalcite, etc.

Cwmystwyth Mine, Cwmystwyth, Upper Llanfihangell-y-Creuddyn, Ceredigion, Wales, UK
09465570017272016802396.jpg
Aurichalcite, etc.

Cwmystwyth Mine, Cwmystwyth, Upper Llanfihangell-y-Creuddyn, Ceredigion, Wales, UK
02836890017272016828208.jpg
Aurichalcite, etc.

Cwmystwyth Mine, Cwmystwyth, Upper Llanfihangell-y-Creuddyn, Ceredigion, Wales, UK
04033680017272039312192.jpg
Aurichalcite, etc.

Cwmystwyth Mine, Cwmystwyth, Upper Llanfihangell-y-Creuddyn, Ceredigion, Wales, UK
09465570017272016802396.jpg
Aurichalcite, etc.

Cwmystwyth Mine, Cwmystwyth, Upper Llanfihangell-y-Creuddyn, Ceredigion, Wales, UK
02836890017272016828208.jpg
Aurichalcite, etc.

Cwmystwyth Mine, Cwmystwyth, Upper Llanfihangell-y-Creuddyn, Ceredigion, Wales, UK
04033680017272039312192.jpg
Aurichalcite, etc.

Cwmystwyth Mine, Cwmystwyth, Upper Llanfihangell-y-Creuddyn, Ceredigion, Wales, UK
09465570017272016802396.jpg
Aurichalcite, etc.

Cwmystwyth Mine, Cwmystwyth, Upper Llanfihangell-y-Creuddyn, Ceredigion, Wales, UK
02836890017272016828208.jpg
Aurichalcite, etc.

Cwmystwyth Mine, Cwmystwyth, Upper Llanfihangell-y-Creuddyn, Ceredigion, Wales, UK
Locality type:Mine
Classification
Species:Aurichalcite
Formula:(Zn,Cu)5(CO3)2(OH)6
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Hemimorphite2
Linarite1
Data
Mineral Data:Click here to view Aurichalcite data
Locality Data:Click here to view Cwmystwyth Mine, Cwmystwyth, Upper Llanfihangell-y-Creuddyn, Ceredigion, Wales, UK
Photo GalleryView Gallery (3 photos)
Data Identifiers
Mindat Occurrence Record ID:18197
Long-form Identifier:1:3:18197:0
GUID (UUID V4):0
Nearest other occurrences of Aurichalcite
7.1km (4.4 miles) ⓘCastell Mine (Dyffryn Castell Mine; New Castell Mine; West Esgair Lle Mine; Gwaithddu Mine; Cripiau Bach Mine), Ponterwyd, Cwmrheidol, Ceredigion, Wales, UK
8.2km (5.1 miles) ⓘFrongoch Mine, Pontrhydygroes, Upper Llanfihangell-y-Creuddyn, Ceredigion, Wales, UK
12.9km (8.0 miles) ⓘNant yr Eira mine (Snowbrook mine), Hafren Forest, Powys, Wales, UK
15.0km (9.3 miles) ⓘLletty Evanhen Mine (Vaughan Mine), Bontgoch, Trefeirig, Ceredigion, Wales, UK
15.1km (9.4 miles) ⓘHenfwlch Mine, Tal-y-bont, Ceulanymaesmawr, Ceredigion, Wales, UK
15.4km (9.6 miles) ⓘRhiwnant Mine, Rhayader, Powys, Wales, UK
15.8km (9.8 miles) ⓘLlechwedd Helyg Mine (Willow Bank Mine), Pen-bont Rhydybeddau, Trefeirig, Ceredigion, Wales, UK
15.8km (9.8 miles) ⓘAberdaunant Mine, Llanidloes, Powys, Wales, UK
16.0km (9.9 miles) ⓘEaglebrook Mine, Tal-y-bont, Ceulanymaesmawr, Ceredigion, Wales, UK
16.1km (10.0 miles) ⓘNant-y-Car Mine, Rhayader, Powys, Wales, UK
References
 
and/or  
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