G archived mineral specimens

Galkhaite

#BW56943

Availability: Sold

Locality: Getchell mine, Humboldt Co., Nevada, United States
Formula: (Cs,Tl)(Hg,Cu,Zn)₆(As,Sb)₄S₁₂
Size: SmCabinet 5.5x4x4cm
Tagged: sulfide , copper

These little cherry red cubic crystals are eye-popping. The first Galkhaite from the Getchell mine were associated with the Realgar and Orpiment and were little black crystals hardly seen. Then much later these Galkhaites were found in siliceous matrix. As you can see the crystals are suberb in form and color. They average about 0.75 to 1mm. Note the wild combination of elements.

Galkhaite at Dakota Matrix Galkhaite at WebMineral Galkhaite at MinDat

Galliskiite

#BN45542

Availability: Sold

Locality: Gigante pegmatite, Punilla dept., Cordoba, Argentina
Formula: Ca₄Al₂(PO₄)₂F₈·5H₂O
Size: Miniature 4x3.5x2cm
Tagged: phosphate , pegmatite mineral
Special Info: Type & Only Locality

The type and only locality for this rare Ca-Al phosphate with Fluorine. It occurs as white, nondescript veinlets in altered Triplite and always associated with Morinite. The orange arrows are the Galliskiite and the blue arrow designates the locality of the possible Gayinte. Excalibur label. New IMA mineral in 2009.

Galliskiite at WebMineral Galliskiite at MinDat

Garronite

#PD35368

Availability: Sold

Featured: Featured in Special Editions
Locality: Glenariff Valley, Garron Plateau, Co. Antrim, Northern Ireland
Formula: NaCa_2.5(Si₁₀Al₆)O₃₂·13H₂O
Size: Miniature 5x5x3.5cm
Tagged: zeolite

Tightly packed radial crystals filling amygdules in basalt. Recognized as a new mineral in 1960 and named after Garron Plateau of Northern Ireland. A zeolite.

Garronite at Dakota Matrix Garronite at WebMineral Garronite at MinDat