Ullmannite
Origin: Ramsbeck, North Rhine-Westphalia, Germany
Owner: Lou Perloff
Microscopic image
Photo-Atlas
of Minerals
Origin: Mynydd Gorddu Mine, Bontgoch, Ceulanymaesmawr, Ceredigion (Dyfed;
Cardiganshire), Wales,UK
Sample size: crystal area 3 mm
Owner: Steve Rust
Origin: Frongoch Mine (Bron-y-Goch; Llawynwnwch), Pontrhydygroes, Upper
Llanfihangell-y-Creuddyn, Ceredigion (Dyfed; Cardiganshire), Wales, UK
Owner: Steve Rust
Origin: Hendre Felen Mine, Ysbyty Ystwyth, Ceredigion (Dyfed; Cardiganshire),
Wales, UK
Sample size: microphoto, 1.5 mm twin crystal
Owner: Steve Rust
Very nice silvery, cubic crystals with some penetration twins to 5 mm. All the
crystals are very distinct and perched nicely on
calcite
matrix.
Origin: Monte Narba, Sarrabus, Sardinia, Italy
Sample size: 4 x 3 x 2 cm
Black cubic ullmannite crystals from 2 - 6 mm being
replaced by lime green
garnierite.
Origin: Ihrtem, Morocco
Ex. Polak collection
Sample size: 3.5 x 2 x 1 cm
Origin: Ramsbeck, Sauerland, Germany
Sample size: 13 x 7 x 6 mm
Origin: Mt Narba Mine, San Vito, Cagliari Province, Sardinia, Italy
Sample size: 6.6 x 6.0 x 3.4 cm
Origin:
Sample size:
