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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Langite from
Llechwedd Helyg Mine (Willow Bank Mine), Pen-bont Rhydybeddau, Trefeirig, Ceredigion, Wales, UK


04333150017272035993498.jpg
Langite

Llechwedd Helyg Mine, Pen-bont Rhydybeddau, Trefeirig, Ceredigion, Wales, UK
07491710017272017444060.jpg
Langite, etc.

Llechwedd Helyg Mine, Pen-bont Rhydybeddau, Trefeirig, Ceredigion, Wales, UK
06460530017272017515580.jpg
Langite, etc.

Llechwedd Helyg Mine, Pen-bont Rhydybeddau, Trefeirig, Ceredigion, Wales, UK
08953890017272017543983.jpg
Langite, etc.

Llechwedd Helyg Mine, Pen-bont Rhydybeddau, Trefeirig, Ceredigion, Wales, UK
01721180017362945312905.jpg
Langite

Llechwedd Helyg Mine, Pen-bont Rhydybeddau, Trefeirig, Ceredigion, Wales, UK
07491710017272017444060.jpg
Langite, etc.

Llechwedd Helyg Mine, Pen-bont Rhydybeddau, Trefeirig, Ceredigion, Wales, UK
06460530017272017515580.jpg
Langite, etc.

Llechwedd Helyg Mine, Pen-bont Rhydybeddau, Trefeirig, Ceredigion, Wales, UK
08953890017272017543983.jpg
Langite, etc.

Llechwedd Helyg Mine, Pen-bont Rhydybeddau, Trefeirig, Ceredigion, Wales, UK
06260750017362945356426.jpg
Langite

Llechwedd Helyg Mine, Pen-bont Rhydybeddau, Trefeirig, Ceredigion, Wales, UK
07491710017272017444060.jpg
Langite, etc.

Llechwedd Helyg Mine, Pen-bont Rhydybeddau, Trefeirig, Ceredigion, Wales, UK
06460530017272017515580.jpg
Langite, etc.

Llechwedd Helyg Mine, Pen-bont Rhydybeddau, Trefeirig, Ceredigion, Wales, UK
08953890017272017543983.jpg
Langite, etc.

Llechwedd Helyg Mine, Pen-bont Rhydybeddau, Trefeirig, Ceredigion, Wales, UK
Locality type:Mine
Classification
Species:Langite
Formula:Cu4(SO4)(OH)6 · 2H2O
Habit:Pseudohexagonal platy
Colour:Deep blue-green
Luminescent properties:None
Abundance at site:Rare
Confirmation
Validity:Confirmed
Confirmation Methods:Visually Identified
Associated Minerals Based on Photo Data:
Quartz5
Brochantite1
Redgillite1
Schmiederite1
Linarite1
Data
Mineral Data:Click here to view Langite data
Locality Data:Click here to view Llechwedd Helyg Mine (Willow Bank Mine), Pen-bont Rhydybeddau, Trefeirig, Ceredigion, Wales, UK
Photo GalleryView Gallery (5 photos)
Data Identifiers
Mindat Occurrence Record ID:16612
Long-form Identifier:1:3:16612:0
GUID (UUID V4):0
Nearest other occurrences of Langite
1.0km (0.6 miles) ⓘLletty Evanhen Mine (Vaughan Mine), Bontgoch, Trefeirig, Ceredigion, Wales, UK
1.1km (0.7 miles) ⓘGwaith Yr Afon mine (West Cwmsymlog Mine; Cwm Daren Mine; River Mine; Taliesan Mine), Goginan, Trefeirig, Ceredigion, Wales, UK
1.6km (1.0 miles) ⓘCwmdaren Mine (Cwm Darren Mine; Lefel Gopor Mine; Copper Level Mine; Twll y Mwyn Mine), Pen-bont Rhydybeddau, Trefeirig, Ceredigion, Wales, UK
1.9km (1.2 miles) ⓘDaren Mine (Old Daren Mine; Darren Consolidated Mine; Daren United Mine; Great Darren Mine; Darren Mine), Pen-bont Rhydybeddau, Trefeirig, Ceredigion, Wales, UK
3.2km (2.0 miles) ⓘBwlchrhennaid Mine (Level Newydd Mine), Pen-bont Rhydybeddau, Trefeirig, Ceredigion, Wales, UK
4.1km (2.5 miles) ⓘNantyrarian Mine (Silver Stream Mine. Blaendyffryn Mine), Goginan, Melindwr, Ceredigion, Wales, UK
6.4km (4.0 miles) ⓘHenfwlch Mine, Tal-y-bont, Ceulanymaesmawr, Ceredigion, Wales, UK
6.8km (4.2 miles) ⓘEaglebrook Mine, Tal-y-bont, Ceulanymaesmawr, Ceredigion, Wales, UK
6.9km (4.3 miles) ⓘBrynarian Mine (Cardigan Bay Consols Mine), Tre-Taliesin, Llangynfelyn, Ceredigion, Wales, UK
8.1km (5.1 miles) ⓘEsgair Hir & Esgair Fraith mines (Cambrian Mine; Cardigan Consolidated Mine; Welsh Potosi Mine; Kylon Potosi Mine), Tal-y-bont, Ceulanymaesmawr, Ceredigion, Wales, UK
References
Jones, A. D. (1987) The minerals of Llechwedd Helyg. UK Journal of Mines and Minerals 3, 25-27
 
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