Pale tan ferroan dolomite crystals on dark brown siderite. There is also a tiny pyrite cube visible in the photo, slightly to the right and below centre. The dolomite could grade into ankerite. Width of...
5713 Mcguinnessite, Copper, Dolomite, DeGrussa Copper Mine (DeGrussa Gold-Copper Mine; DeGrussa Mine), Doolgunna Station, Peak Hill Goldfield, Meekatharra Shire, Western Australia
Genie of the lamp. Colourless bladed dolomite crystals over pale blue mcguinnessite on native copper. Height of view 11mm. Stack of 160 images.
20063 M446 Marshite, Cuprite, Dolomite, Mutooroo Mine, Pine Creek – Mutooroo area, Mingary, Olary Province, South Australia
Pale greenish marshite(!) crystal with dark cuprite crystals and white dolomite. The marshite fluoresces strongly red with Convoy UV torch. There are three other areas of the specimen that also fluoresce bright red, but individual...
Zoned yellow and brown sphalerite crystals with colourless rhombs of dolomite and colourless round groups of quartz crystals. A couple of very pale yellow sphalerite crystals exhibit an unusual pinkish fluorescence. Width 9mm. Stack of...
30068 Barite, Dolomite, Pyrite, Calcite, Newfoundland Zinc Mine, Daniel’s Harbor, Newfoundland, Canada
Ex Barry Johnson Collection. Video best viewed full screen.
Grey complex dolomite crystals with a single brownish cerussite crystal from the Kintore open cut, Broken Hill. In addition, there are tufts of an unknown white mineral. Candidates could be sepiolite (not recorded at Broken...
8004 Anatase, Dolomite, Poudrette quarry, Mont Saint-Hilaire, La Vallee-du-Richelieu RCM, Monteregie, Quebec, Canada
ex Bernie and Margaret Day Collection
Three sharp red cinnabar crystals on white dolomite. Ex Eugene Carmichael Collection (EWC 437), ex The Aesthetics Underground, Alberta, Canada.
Single crystal, no matrix. Ex University of Arizona Mineral Museum. Donor Carl Richardson.
A very nice fully crystalline specimen of light pink dolomite growing free of matrix with just superb crystallization’s growing with minor chalcopyrite and pyrite and measuring 4.5 x 2.7 x 2.4 cm in size. This...
JL0650. Frank Robinson
JL1526 Dendrites. Joan Taylor
7122 JL280, Dolomite, Kinoite, Gilalite, Christmas Mine (Red Bird shafts; Inspiration Mine; Hackberry shafts), Christmas, Christmas area, Banner District, Dripping Spring Mts, Gila Co., Arizona, USA
Type Locality for gilaite. ex Joan Lamond Collection
ex Joan Lamond Collection
ex Joan Lamond Collection
0330 Helvite, Dolomite, Calcite, Chamosite, Huanggang (Huanggangliang) Fe-Sn deposit, Hexigten Banner (Keshiketeng Co.), Ulanhad League (Chifeng Prefecture), Inner Mongolia Autonomous Region, China
White dolomite crystals on superb brown helvite crystals.
Rutile and dolomite, from the famous Lengenbach Quarry, Fäld, Binn Valley, Wallis, Switzerland.
Purple fluorite nestled in amongst dolomite crystals from Liter’s Quarry (Hanson Aggregates Irvington Quarry), Breckinridge Co., Kentucky, USA. While looking at this through my microscope, I assumed it was a cube of fluorite, but the...