Luís Costa's Photo Gallery
7NH-L2LBultfonteinite Ca2(HSiO4)F·H2O , Tobermorite Supergroup
Shijiangshan mine, Hexigten Banner, Chifeng City, Inner Mongolia, ChinaDimensions: 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, PortugalDimensions: 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 RepublicDimensions: 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, CanadaDimensions: 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, SpainDimensions: 30 mm x 25 mm x 10 mm
Weight: 14 g
Man near a sieve at Borralha
Borralha Mining Field, Salto, Montalegre, Vila Real, PortugalPhoto from 13th of March of 1909, man near a local sieve
XN9-5WMQuartz SiO2 , Hematite Fe2O3
Jinlong Hill, Longchuan Co., Heyuan, Guangdong, ChinaDimensions: 75 mm x 59 mm x 37 mm
9W7-9NLAnalcime Na(AlSi2O6)·H2O
Seiser Alm, South Tyrol, Trentino-Alto Adige, ItalyDimensions: 82 mm x 78 mm x 31 mm
PPC-KPJBaryte BaSO4
Cavnic Mine, Cavnic, Maramureș County, RomaniaDimensions: 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, UKDimensions: 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.