Specimen from the original collection of one of the discoverers of this ultra rare mineral species. Orange crystalline masses richly coating black quartz/hematite ore NaMn2+5[Si5As5+O17(OH)](OH) Type and only locality, (IMA 2013-093). Size:1x0,7 cm.
A recent new find from Monte Arsiccio in Tuscany: coquimbite in big crystals , very high quality for this species, on a white Halotrichite matrix associated with Roemerite. Among the best ever seen for this rare species
size 5x4x3 cm
Nice group of hopeite crystals of dark orange-brown color from a defunct locality . Hopeite crystals are well developed and associated to transparent micorcvrystals of parahopeite . Pictures taken with white led light and halogen lamp .The specimen come from a Geologist collection who worked at that mine in 1975- 1980. Size 3x2x1 cm
Nice group of hopeite crystals well developed and associated to transparent micorcvrystals of parahopeite. in one broken crystal is clearly visible the white "core" of hopeite , surrounded and partialle replaced by a crust of parahopeite Pictures taken with white led light and halogen lamp .The specimen come from a Geologist collection who worked at...
Nice group with lucent parahopeite crystals of dark orange-brown color due to iron staining pseudomorph of hopeite from defunct locality . The piece come from a Geologist collection who worked at that mine in 1975- 1980. Size 9x6x2 cm
Un pezzo di grande interesse dalla collezione Lattuada con cartellino originale della Bottega delle pietre, Milano. Cristallo con la classica lucentezza e fortemente fluorescente, 2 cm . Di difficile reperimento nel mercato attuale. il cristallo è completo nella parte frontale, ma la parte posteriore è incompleta per la chiusura della geode di galena,...
In the mid-1970s a cavern encountered on the 430-meter level of the X orebody, was encrusted with botryoidal and stalactitic vanadinite. SEM investigation has shown alternating layers of dark vanadinite with narrow layers of yellow descloizite. An extremely rare, unique occurrence . The descoizite is fluorescent under LW UV. Size 8x6x3 cm