ncat MARXX Lavendulan, Erythrite, Cobaltaustinite, Cobaltite, Dome Rock Copper Mine, Boolcoomatta Station, Olary Province, South Australia

Pink erythrite (look closely, some crystals are bent), blue lavendulan and olive-green cobaltaustinite. Cobaltite crystals are present, enbedded in the matrix, but not in this image. First photo: Width of view 7.66mm. Stack of 85 images. Second photo: Width of view 6mm. Stack of 22 images. Click on the images...

9003 JP2390 Erythrite, Roselite?, Cobaltite, Hörnesite, Heterogenite, Queen Sally Mine, Kajabbi, Cloncurry Shire, Queensland

Sharp pink erythrite crystals and masses. Cobaltite as cubes mostly replaced by tan hörnesite. Black/purplish heterogenite. Ex Jo Price Collection. First image: Width of view 5.75mm. Stack of 120 images. Click on the image below for a higher resolution version. Below: Aggregates of colourless hörnesite crystal sprays on erythrite. Width...

5807 A2983 672marps Fluorite, Siderite, Pyrite, K Feldspar, Albite, Granite Mountain Quarry #1, Granite Mountain Area, Little Rock, Pulaski County, Arkansas, USA

Octahedral fluorite colourless through to a fracture, then pale purple-grey over the rest of the crystal. Blue fluorescence. Hemisphere of brown siderite(?), rounded pyrite, and colourless albite, all on pinkish-tan K feldspar. Ex Art Smith Collection. Acquired by Art from Al Kidwell in 1990. Width of view 11.5mm. Stack of...

5806 A2964 680marps Fluorite, Pyrophanite, Aegirine (Acmite), Albite, Holiday Inn Quarry, Granite Mountain area, Little Rock, Pulaski County, Arkansas, USA

Purple fluorite cluster and isolated crystals with green needles of aegirine, brown pseudohexagonal pyrophanite, and colourless albite crystals, all in a white albite matrix. Ex Art Smith Collection (collected in 1986). Width of view 8.63mm. Stack of 50 images. Click on the image below for a higher resolution version.

5805 A2980 523marps Fluorite, Chlorite, Magnetite, Albite, Pyrophanite, Natrolite(?), Big Rock Quarry (3M Quarry), Little Rock, Pulaski County, Arkansas, USA

Tiny purple octahedral fluorite crystalson albite with greenish chlorite, white prismatic crystals of natrolite(?), colourless quartz, and brown pyrophanite. Also on specimen magnetite, Ex Art Smith Collection (collected in 1979). Width of view 11.5mm. Stack of 57 images. Click on the image below for a higher resolution version. When I...

ncat JP340 Whitlockite, Childrenite-Eosphorite, Palermo No. 1 Mine (Palermo No. 1 pegmatite; Hartford Mine; GE Mine), Groton, Grafton Co., New Hampshire, USA

Transparent tan-coloured rhombohedral crystals of whitlockite with prismatic crystals of childrenite? Ex Jo Price Collection. Width of view 5.75mm. Stack of 100 images. Edit: May be eosphorite rather than childrenite (or somewhere in the series). Click on the image below for a higher resolution version.

ncat 221640993 IAB-MG iron Meteorite, Campo del Cielo meteorite, Gancedo, Doce de Octubre Department, Chaco Province, Argentina

“Alien-Shape” meteorite. Longest dimension 9mm. Estimated to have fallen 4,000 to 6,000 years ago. Composition is metallic nickel-iron and a few sulphides, carbides, and phosphides (normal for iron meteorites), and it also contains silicate inclusions. One of the world’s most abundant meteorites, over a hundred tons having been found scattered...

ncat ANK F48 Fluorite, Dolomite, Pyrite, Bluffton Stone Company Quarry, Bluffton, Richland Township, Allen Co., Ohio, USA

Purple fluorite tabular crystals (one axis is shorter than the other two) with very tiny modifications on the corners (modified by the trapezohedron). Colourless to greyish white dolomite crystals (matrix is a dolostone). Tiny pyrite crystals on fluorite. Ex Noel and Ann Kennon Collection #F48. Acquired from Pete Richards in...