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Luís Costa's Photo Gallery

YA8-7JGAragonite

Styrian Erzberg, Eisenerz, Styria, Austria

Dimensions: 10.8 cm x 8 cm x 2.3 cm

Photo ID: 937702     Uploaded by: Luís Costa   View Count: 10   Approval status: Public galleries    Type: Photo - 674 x 471 pixels (0.3 Mpix)

7Y6-K8UQuartz, Siderite

Medel gorge, Medel Valley, Grisons, Switzerland

Dimensions: 9.5 cm x 7.5 cm x 7 cm
Largest Crystal Size: 3.2 cm

Photo ID: 937701     Uploaded by: Luís Costa   View Count: 9   Approval status: Public galleries    Type: Photo - 624 x 635 pixels (0.4 Mpix)

F96-W95Pyromorphite, Quartz

Red Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK

Dimensions: 5.9 cm x 9 cm x 2.7 cm

Vein quartz covered with a layer of manganese oxide, possibly coronodite, with a fairly large depression containing numerous sprays of tapering pale yellow to light khaki coloured pyromorphite crystals. Almost certainly collected in the late 1970's.
Photo ID: 852598     Uploaded by: Luís Costa   View Count: 40   Approval status: Public galleries    Type: Photo - 513 x 453 pixels (0.2 Mpix)

PX5-7YXTremolite

Campolungo, Piumogna Valley, Leventina, Ticino, Switzerland

Dimensions: 4 cm x 19 cm x 9.5 cm
Weight: 850 g

Aggregate of white lustrous acicular crystals from classic alpine locality
Photo ID: 852596     Uploaded by: Luís Costa   View Count: 39   Approval status: Public galleries    Type: Photo - 547 x 306 pixels (0.2 Mpix)

ENQ-J4XBeryl

Erongo Mountains, Karibib, Erongo Region, Namibia

Dimensions: 3.8 cm x 2 cm x 1.3 cm

Prismatic crystals show a whiteish to slightly yellowish colour with distinctly zoned terminations of a greenish to blueish colour which led to the name "greenkop" beryls
Photo ID: 779833     Uploaded by: Luís Costa   View Count: 35   Approval status: Public galleries    Type: Photo - 498 x 539 pixels (0.3 Mpix)

5LU-E60Baryte, Marcasite, Quartz, Sphalerite

Bou Nahas Mine, Oumjrane mining area, Alnif, Alnif County, Tinghir Province, Drâa-Tafilalet, Morocco

Dimensions: 6.2 cm x 5 cm x 3.5 cm
Weight: 65 g

Good, gemmy, sharp and lustrous baryte crystal combined with sparkly marcasite crystals and sphalerite on quartz matrix from Oumjrane. Great luster!
Photo ID: 779804     Uploaded by: Luís Costa   View Count: 64   Approval status: Public galleries    Type: Photo - 302 x 293 pixels (0.1 Mpix)

12Q-A4TDolomite

Dolomite quarry, Rędziny, Gmina Kamienna Góra, Kamienna Góra Co., Lower Silesian Voivodeship, Poland

Dimensions: 6.5 cm x 4.7 cm x 3.5 cm
Weight: 65 g

Photo ID: 753872     Uploaded by: Luís Costa   View Count: 74   Approval status: Public galleries    Type: Photo - 596 x 433 pixels (0.3 Mpix)

KCM-0JCQuartz (Var: Chalcedony), Okenite

Multiple photos available
Jalgaon District, Maharashtra, India

Dimensions: 9 cm x 6 cm x 2 cm
Weight: 26 g

Photo ID: 753869     Uploaded by: Luís Costa   View Count: 68   Approval status: Public galleries    Type: Photo - 500 x 511 pixels (0.3 Mpix)

V0K-C84Calcite, Quartz

Multiple photos available
Jalgaon District, Maharashtra, India

Dimensions: 10.5 cm x 10 cm x 4 cm
Largest Crystal Size: 1 cm
Weight: 499 g

Photo ID: 753867     Uploaded by: Luís Costa   View Count: 57   Approval status: Public galleries    Type: Photo - 499 x 410 pixels (0.2 Mpix)

4MH-NYGAutunite

Multiple photos available
Infesta Mine, Viariz, Baião, Porto, Portugal

Dimensions: 3.7 cm x 7.5 cm x 3 cm

Photo ID: 753865     Uploaded by: Luís Costa   View Count: 83   Approval status: Public galleries    Type: Photo - 543 x 329 pixels (0.2 Mpix)
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