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Neath-Port Talbot (West Glamorgan; Glamorgan), Wales, UK

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Ankerite : Ca(Fe2+ ,Mg,Mn2+)(CO3)2, Quartz : SiO2

Nant Helen opencast coal mine, Onllwyn, Neath-Port Talbot (West Glamorgan; Glamorgan), Wales, UK

Ankerite crystals to 6mm. Steve Rust photo & collection
 © Steve RustPhoto ID: 1746    View Count: 1651

Ankerite : Ca(Fe2+ ,Mg,Mn2+)(CO3)2, Quartz : SiO2

Nant Helen opencast coal mine, Onllwyn, Neath-Port Talbot (West Glamorgan; Glamorgan), Wales, UK

Golden ankerite crystals to 4mm on quartz. Ian Jones collection. Collected 1999, Nant Helen opencast, bottom bench.
 © Ian JonesPhoto ID: 10210    View Count: 622

Calcite : CaCO3, Ankerite : Ca(Fe2+ ,Mg,Mn2+)(CO3)2

Nant Helen opencast coal mine, Onllwyn, Neath-Port Talbot (West Glamorgan; Glamorgan), Wales, UK

White calcite crystals to 6mm on ankerite.
 © Steve RustPhoto ID: 224333    View Count: 28

Chalcopyrite : CuFeS2, Ankerite : Ca(Fe2+ ,Mg,Mn2+)(CO3)2, Quartz : SiO2

Nant Helen opencast coal mine, Onllwyn, Neath-Port Talbot (West Glamorgan; Glamorgan), Wales, UK

Complex crystals of chalcopyrite to 2.5mm on creamy rhombs of ankerite, with quartz. Collected 1999.
 © Christine RustPhoto ID: 15051    View Count: 372

Millerite : NiS

Nant Helen opencast coal mine, Onllwyn, Neath-Port Talbot (West Glamorgan; Glamorgan), Wales, UK

Spray of millerite crystals on Quartz. Field of view 5mm. C.Thomson collection & photo.
 © C.ThomsonPhoto ID: 3813    View Count: 1653

Millerite : NiS, Ankerite : Ca(Fe2+ ,Mg,Mn2+)(CO3)2, Quartz : SiO2

Nant Helen opencast coal mine, Onllwyn, Neath-Port Talbot (West Glamorgan; Glamorgan), Wales, UK

Millerite spray, crystals to 15mm, with ankerite and quartz. Ian Jones collection, collected 1999
 © Ian JonesPhoto ID: 6100    View Count: 388

Quartz : SiO2

Nant Helen opencast coal mine, Onllwyn, Neath-Port Talbot (West Glamorgan; Glamorgan), Wales, UK

3cm quartz crystal. Steve Rust photo, Christine Rust collection
 © Steve RustPhoto ID: 1761    View Count: 533

Quartz : SiO2, Ankerite : Ca(Fe2+ ,Mg,Mn2+)(CO3)2

Nant Helen opencast coal mine, Onllwyn, Neath-Port Talbot (West Glamorgan; Glamorgan), Wales, UK

Area 8cms x 7cms. Steve Rust photo & collection
 © Steve RustPhoto ID: 1756    View Count: 477

Quartz : SiO2, Chalcopyrite : CuFeS2, Ankerite : Ca(Fe2+ ,Mg,Mn2+)(CO3)2

Nant Helen opencast coal mine, Onllwyn, Neath-Port Talbot (West Glamorgan; Glamorgan), Wales, UK

Quartz crystals to 2.5cms, with 2-3mm chalcopyrite's, on ankerite. Steve Rust photo & collection
 © Steve RustPhoto ID: 1870    View Count: 437

Quartz : SiO2

Nant Helen opencast coal mine, Onllwyn, Neath-Port Talbot (West Glamorgan; Glamorgan), Wales, UK

2cm double terminated quartz crystal. Steve Rust photo & collection
 © Steve RustPhoto ID: 1760    View Count: 411
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