Luís Costa's Photo Gallery

7NH-L2LBultfonteinite Ca₂(HSiO₄)F·H₂O , Tobermorite Supergroup

Shijiangshan mine, Hexigten Banner, Chifeng City, Inner Mongolia, China

Dimensions: 69 mm x 44 mm x 26 mm
Weight: 75 g

J3J-QHQThomsonite-Ca NaCa₂[Al₅Si₅O₂₀]·6H₂O

Fajã Grande, São Roque do Faial, Santana, Madeira Island, Madeira, Portugal

Dimensions: 71 mm x 39 mm x 48 mm

QWX-6JHNordstrandite Al(OH)₃ , Phillipsite Subgroup

Mokrá quarry, Mokrá, Čichalov, Karlovy Vary District, Karlovy Vary Region, Czech Republic

Dimensions: 103 mm x 57 mm x 55 mm
Weight: 347 g

Y13-0CMWhiteite-(CaFeMg) {Ca}{(Fe²⁺,Mn²⁺)}{Mg₂}{Al₂}(PO₄)₄(OH)₂·8H₂O

Rapid Creek, Dawson mining district, Yukon, Canada

Dimensions: 60 mm x 44 mm x 18 mm
Largest Crystal Size: 16 mm

9UF-DYPQuiroguite Pb₂₃Sb₆S₃₂

San Andrés Mine, Sierra Almagrera, Cuevas del Almanzora, Almería, Andalusia, Spain

Dimensions: 30 mm x 25 mm x 10 mm
Weight: 14 g

Man near a sieve at Borralha

Borralha Mining Field, Salto, Montalegre, Vila Real, Portugal

Photo from 13th of March of 1909, man near a local sieve

XN9-5WMQuartz SiO₂ , Hematite Fe₂O₃

Jinlong Hill, Longchuan Co., Heyuan, Guangdong, China

Dimensions: 75 mm x 59 mm x 37 mm

9W7-9NLAnalcime Na(AlSi₂O₆)·H₂O

Seiser Alm, South Tyrol, Trentino-Alto Adige, Italy

Dimensions: 82 mm x 78 mm x 31 mm

PPC-KPJBaryte BaSO₄

Cavnic Mine, Cavnic, Maramureș County, Romania

Dimensions: 122 mm x 80 mm x 34 mm

GC1-Y7VGmelinite Subgroup, Calcite CaCO₃ , Analcime Na(AlSi₂O₆)·H₂O

Little Deerpark Quarry, Glenarm, Co. Antrim, Northern Ireland, UK

Dimensions: 52 mm x 37 mm x 30 mm

Basalt matrix with an amygdale lined with a lovely combination of orange gmelinite-Na crystals and colourless analcime crystals with a large golden calcite crystal set in the centre of the amygdale. The gmelinite-Na crystals display nice twinning and the calcite crystal displays an unusual base composed of lots of smaller, terminated crystals where it meets the surrounding zeolites.