Rodochrozit, křišťál
Historický vzorek masivního rodochrozitu zakončeného dutinou, kde jej přerůstají drobné krystaly křemene.
Kankrinit, sodalit
Velmi bohatý vzorek štěpných zrn žlutooranžového exotického silikátu Na, Ca a Al se síranovou a karbonátovou skupinou – kankrinitu v […]
Spurrit
Masivní ukázka tvořená téměř výhradně světle namodralým spurritem, velmi vzácným silikátem vápníku s CO3 skupinou z vysokoteplotního skarnu spolu se […]
Gold
A small sample of nicely developed gold crystals on pyrite crystals from Romania.
Spurrite
Massive sample composed almost exclusively of lightly bluish spurrite, a very rare calcium silicate with a CO3 group from high-temperature […]
Ludwigite
A larger massive sample composed mostly of fibrous radiating black ludwigite. Ludwigite is a relatively uncommon borate of iron and […]
Ludwigite
A massive specimen composed largely of fibrous radially divergent black ludwigite. Ludwigite is a relatively rare iron and magnesium borate. […]
Sylvanite
Several silvery shiny laths of the rare Sylvanite up to 5 mm in size from the type locality Baia de […]
Tetrahedrite
A classic combination of extremely sharp-edged and exceptionally well-formed tetrahedrite crystals nicely set on light pinkish rhodochrosite (possibly manganocalcite). The […]
Lindströmite
Silvery granular aggregates of a rare sulfide from the aikinite-bismutinite series from the Baita locality. The specimen was analyzed .
Quartz
Great druse of white quartz crystals sprinkled with pyrite.
Chalcopyrite
Beautiful smoky quartz crystals closely associated with chalcopyrite from the well-known Romanian locality Cavnic .