Calcite
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.
0302 Barite, Calcite, Sphalerite, EZ Mine, Puttapa, South Australia
Sharp pale yellow barite crystal on calcite with sphalerite. Width of view 3.5mm. Stack of 40 images. Click on the image below for a higher resolution version.
0235 Barite, Calcite, Broken Hill, New South Wales
Tiny calcite crystals are scattered over pale blue barite blades that measure up to 18mm across. The barite also has yellowish zones.
0213 Millerite, Calcite, Grays Quarry, Hamilton, Hancock Co., Illinois
Millerite inclusions in calcite. Ex G. Tribbey, ex Delbert L. Oswald Coll.
0431 Calcite, Niddrie, Victoria
Collected by me over 30 years ago. The quarry is now a small lake surrounded by housing.
0463 Calcite, Mn Oxide, Lilydale Quarry, Lilydale, Victoria
Usually referred to as “pyrolusite”, but exact manganese oxide unknown.
1210 Calcite, Phillipsite, Marrawah, Tasmania
A doubly-terminated calcite crystal on phillipsite. Photo width 12mm.
1090 Calcite, Bundoora, Victoria
Unusual habit for the locality of colourless calcite crystals, Boral Limited quarry, Bundoora, City of Whittlesea, Victoria.
0674 Ferroan Calcite, Gonnardite-Natrolite, Bundoora, Victoria
Brown ferroan calcite with a white gonnardite/natrolite intergrowth from the Boral Limited quarry, Bundoora, City of Whittlesea, Victoria.
5557 Calcite, Rhodochrosite, Quartz, Kara Mine, Hampshire, Tasmania
A mixture of Mn-rich calcite-Ca-rich rhodochrosite pseudomorphing kutnohorite, sitting on drusy quartz crystals. According to Ralph Bottrill, analyses showed Mn40Ca60 and Mn75Ca25 from XRD. This specimen is quite pale compared to others found on a field trip...
10001 Calcite, Fluorite, Hill-Ledford Mine, Cave-in-Rock, Hardin Co., Illinois, USA
Tiny cream calcite crystals on dark purple fluorite from the Hill-Ledford Mine, Cave-in-Rock, Cave-in-Rock Sub-District, Illinois – Kentucky Fluorspar District, Hardin Co., Illinois, USA. Largest fluorite 65mm across. Mined in the late 1950s or early...
5448 Barite, Calcite, Sidmouth Beach, Devon, England
Barite on calcite from Sidmouth Beach, Sidmouth, East Devon, Devon, England. Photo width 11mm.
4076 Smythite, State Route 37 road cut (6), Bloomington, Monroe Co., Indiana, USA
Smythite crystals in calcite from the Type Locality, State Route 37 road cut (6), Bloomington, Monroe Co., Indiana, USA. If you squint a little, you can make out the hexagonal outline. Specimen given to me...
1455 Pyrite, Pint’s Quarry, Raymond, Black Hawk Co., Iowa, USA
Interesting bipyramidal pyrite crystals, somewhat altered to brown goethite (although you can see some original pyrite peeking through on the edges) on calcite from Pint’s Quarry, Raymond, Black Hawk Co., Iowa, USA. The main cluster...
5549 Tunisite, Celestine, Calcite, Condorcet, Drôme, France
The tabular tunisite crystals look like colourless wulfenite crystals. The long thin crystals are celestine, and there is also calcite with brownish cores present. Specimen is from Condorcet, Drôme, Auvergne-Rhône-Alpes, France.
