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Minerals

6323 results

Mineral

Écrinsite

écrinsite
Brown microcrystal of the very rare mineral örebroite from the type and only known locality worldwide in Orebro (Sjögruvan, Grythyttan, Hällefors, Örebro County, Sweden). Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Örebroite

örebroite
Čechita de la mina Maria Magdalena, a Ulldemolins Mineral

Čechite

čechite
Botryoidal Čejkaite with prismatic Grimselite (specimen width 4.7cm) Locality: Rovnost Mine (Werner Mine), Jáchymov (St Joachimsthal), Karlovy Vary Region, Bohemia (Böhmen; Boehmen), Czech Republic Mineral

Čejkaite

čejkaite
Figure 4. Photomicrographs of Zn-rich base metal associations in the Huanuni deposit. (A) Chalcopyrite disease textures in sphalerite that replace earlier pyrite in the Bonanza area; RPPL. (B) Stage-2 base metal sulphides with exsolved černýite from sphalerite in the La Suerte area; back-scattered electron (BSE) image. (C) Stage-2 base metal sulphides in the Bonanza area; notice the passive precipitation of sphalerite after pyrite; BSE image. (D) Stage-2 base metal sulphides in association with phyllic-alteration minerals in the La Suerte area; notice the reactive precipitation of sphalerite after pyrite and the occurrence of apatite; BSE image. (E) Stage-2 rutile associated with quartz and wurtzite in the La Suerte area; BSE image. (F) Stage-2 base metal-rich association with sphalerite partly replaced by chalcopyrite, cassiterite, and stage-3 stannite rimming potassium feldspar (potassic assemblage) in the Central area; BSE image. Mineral

Černýite

černýite

Formula
Cu2CdSnS4
Back-scattered electron image of holotype material (P1P 52/2022) – zoned škáchaite-dolomite crystals. Škáchaite zones are white, whereas dolomite (with variable Mg/Co/Fe) ratios) is grey. The red box indicates the area used for the single-crystal X-ray diffraction study. The image is published in an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Mineral

Škáchaite

škáchaite

Formula
CaCo(CO3)2
Mineral

Šlikite

šlikite
Mineral

Šreinite

šreinite

Formula
Pb(UO2)4(BiO)3(PO4)2(OH)7·4H2O
Field of view 3.5 mm. From: Geschieber vein, Svornost Mine, Jáchymov, Karlovy Vary District, Karlovy Vary Region, Czech Republic. Mineral

Štěpite

štěpite

Formula
U(AsO3OH)2·4H2O
2.5 x 2.3 x 2.0 cm. This extremely rare calcium arsenate is reported from only one mine in the world, the type locality at Jachymov (St Joachimsthal), and the label states that it's from the Svornost Mine. The piece features small white triclinic svenekite botryoidal groups on matrix. Best seen under the microscope, but we were able to photograph it with a Canon MP-E 65mm macro lens. This is one of the few pieces this material that we've had, and it is accompanied by a classic label from Czech mineral expert, Josef Vajdák/Pequa Rare Minerals. Mineral

Švenekite

švenekite
Mineral

Żabińskiite

żabińskiite