Ex Bill Henderson Collection. Labelled as mimetite, but more likely to be pyromorphite. Photo width 3.05mm.
More than just simple cubes on these boleite crystals! Ex Bill Henderson Collection. Ex Forrest Cureton. Photo width 3.33mm.
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...
Tiny fibrous pale-yellow tufts and crust. This was the second locality for alwilkinsite-(Y), named after good friend, Al Wilkins in 2016. It could have been very different. The Italian one was first described (as an...
A neat little spray of malachite, roughly 0.6mm across, from the lesser-known Mineral Hill deposit, the Iodide Mine (Mount Iodide Mine), Mineral Hill field, Condobolin district, Kennedy Co., New South Wales. Also present on the specimen...
Radioactive soddyite from the Shinkolobwe Mine (Kasolo Mine), Katanga, Democratic Republic of Congo (Zaïre). Photo width 12mm. The Shinkolobwe Mine is the Type Locality for soddyite.
Tiny sharp golden fluornatromicrolite on albite, Shigar Valley, Skardu District, Baltistan, Gilgit-Baltistan, Pakistan.
Rutile and dolomite, from the famous Lengenbach Quarry, Fäld, Binn Valley, Wallis, Switzerland.
Plášilite (yellow), and manganoblödite (pink), from the Blue Lizard Mine, Red Canyon, White Canyon District, San Juan Co., Utah. Plášilite is also recorded from one other locality, the nearby Green Lizard Mine. And manganoblödite is...
Sideronatrite on Asphaltum, Blue Lizard Mine, Red Canyon, White Canyon District, San Juan Co., Utah, USA.
A specimen of natrozippeite, this one with brochantite from the Blue Lizard Mine, Red Canyon, White Canyon District, San Juan Co., Utah, USA. Yellow thin bladed crystals of natrozippeite with green aggregates of brochantite.
A nice example of an uncommon pyrite habit from Zeilberg Quarry, Maroldsweisach, Franconia, Bavaria, Germany.
A more opaque Monazite-(Ce) from Craddock Moor Mine, Craddock Moor, St Cleer, Liskeard, Liskeard District, Cornwall, England, UK.
A single doubly-terminated crystal of monazite (dominant REE unknown), Cross Hill, Juniper Flats, Nuevo, Lakeview Mts, Riverside Co., California, USA.
A mix of cheralite (reddish-brown) and euxenite-(Y) (black) from the Uranium King Mine, Encampment, Encampment District, Carbon Co., Wyoming, USA. Ex Jim Ferraiolo.
A lovely shade of green mixite and blue chrysocolla, from the Gold Hill Mine (Western Utah Mine), Gold Hill, Gold Hill District (Clifton District), Deep Creek Mts, Tooele Co., Utah, USA.
Tiny but well-formed crystals of epidote from the Toombeola Quarry, Connemara, Co. Galway, Ireland.
Platy yellow thorikosite with globular fluorite, and white gypsum from the Lavrion District, Attikí Prefecture, Greece. Exact locality unknown.
A cute pair of hexagonal vanadinite crystals from the Macy Mine (Percha Mine; Vanadinite Mine; J. C. Macy claim; Barking Frog; Bobbee De claim), Percha Creek, Hillsboro, Hillsboro District, Sierra Co., New Mexico, USA.
A pyrite crystal is perched on orange-red sphalerite, on a bed of colourless quartz crystals, from the Eagle Picher Mine, Cardin, Picher Field, Tri-State District, Ottawa Co., Oklahoma, USA.
A deep blue veszelyite from the Black Pine Mine (Combination Mine; Black Pine tailings; Black Pine dump), Black Pine Ridge, John Long Mts, Philipsburg District (Flint Creek District), Granite Co., Montana, USA. Ex Bernie Day...
Barite crystals from the Dolyhir Quarry, Old Radnor, Powys, Wales.
Colourless edingtonite with white natrolite from the Jacupiranga mine, Cajati, São Paulo, Brazil.
Silky white aggregates of dundasite from Zlaté Hory (Zuckmantel), Olomouc Region, Moravia (Mähren; Maehren), Czech Republic. Photo width 17mm.
Prismatic natrolite crystals exhibiting the characteristic terminations on analcime from the Magheramorne Quarry, Larne, Co. Antrim, Northern Ireland. Photo width 2.5mm.
Crude crystals of gold make up this specimen from the Roger A Mine, Mt Kare Valley, Mt Hagen, Enga Province, Papua New Guinea. Photo width 5mm.
Black hexagonal hibonite with green spinel (out of focus top-middle) from Ambindandrakemba, Tranomaro Commune, Amboasary District, Anosy Region (Fort Dauphin Region), Tuléar Province (Toliara), Madagascar.
Melkovite, U-Mo occurrence, Shunak Mts, Mointy Railway Station, Mointy, Balkhash Region, Karagandy Province, Kazakhstan. Type Locality. Certified (microprobe analyzed) sulfur-yellow melkovite, a rare hydrous Ca-Fe phosphate-molybdate, known only from the single locality in the world....
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...
10005 Hydroxyapophyllite-(K), Prehnite, Stilbite, Laumontite, Fairfax quarry, Centreville, Fairfax Co., Virginia, USA
Blocky opaque apophyllite with minor colourless stilbite and white laumontite on green prehnite. 65x45x10mm. Ex Joe Cilen (7403). Ex Eugene Carmichael (562). Hydroxyapophyllite-(K), prehnite, stilbite, laumontite, from the Fairfax quarry (Centreville Quarry; Sisslers Quarry), Centreville,...
A neat pseudomorph of barite after alstonite from Nentsberry Haggs Mine, Nent Valley, Alston Moor District, Cumbria, England. Photo width 20mm.
Barite on calcite from Sidmouth Beach, Sidmouth, East Devon, Devon, England. Photo width 11mm.
Brown humite and pink spinel etched out of marble from Luc Yen, Yenbai Province (Yen Bai Province), Vietnam.
Stunning tanzanite-blue strengite from Indian Mountain, Cherokee Co., Alabama, USA.
A 5mm wide pair of microlite group crystals from the Hollister prospects (Hollister Quarry), South Glastonbury, Glastonbury, Hartford Co., Connecticut, USA.
A plug for Mindat! I have had this specimen for many many years, and it was labelled simply wavellite, Bartow, Florida. The only Bartow in Mindat is in Georgia. So I used the Photo Search...
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...
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...
Cubes of galena with tiny pyrite cubes and minor reddish sphalerite from the Ballard Mine, Baxter Springs, Picher Field, Tri-State District, Cherokee Co., Kansas, USA. Specimen is 42mm wide. Ex Eugene Carmichael Collection (EWC 2295),...
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...
A zoned tourmaline, part foitite, part elbaite, according to the label, from the Mount Mica Quarry (Mount Mica Mine), Paris, Oxford Co., Maine, USA. It has broken at some point in its geological past, and...
Red realgar and yellow orpiment from the Getchell Mine (North Pit; Center pit; South pit), Adam Peak, Potosi District, Osgood Mts, Humboldt Co., Nevada, USA. Interesting to see the crystallisation of each species seemingly oriented...
Realgar and pyrite from the famous Lengenbach Quarry, Fäld (Imfeld; Im Feld; Feld), Binn Valley, Wallis (Valais), Switzerland.
Fibrous to acicular crystals of cacoxenite from Mason Pass, Yerington, Yerington District, Singatse Range, Lyon Co., Nevada, USA. Ex Hatfield Goudey (of goudeyite fame). Ex John Lewis Collection.
Bornite pseudomorph after chalcocite, Belmont Mine, Butte, Butte District (Summit Valley District), Silver Bow Co., Montana, USA. Labelled as A Vein, 3000 Level. Ex Hatfield Goudey. Ex John Lewis Collection.
Purple fluorite cubes with a number of other small faces, from Ungerhammerplatzl (Platzl), Unterlaussa, Altenmarkt bei Sankt Gallen, Liezen, Styria, Austria.
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.
A group of golden titanite crystals, the front one being 2mm across, from Plattenkogel north slope, Anlauf valley, Gastein valley, Hohe Tauern, Salzburg, Austria. Other species present include adularia, a chlorite-group mineral, and albite.
Striking blue kinoite on colourless crystals of hydroxyapophyllite-(K) from the Christmas Mine (Red Bird shafts; Inspiration Mine; Hackberry shafts), Christmas, Christmas area, Banner District, Dripping Spring Mts, Gila Co., Arizona, USA. One of my favourite...
Yellow hexagonal zincite crystals from the An der Seilbahn slag locality, Hüsten, Arnsberg, Sauerland, North Rhine-Westphalia, Germany.
Prismatic and acicular topaz crystals, with opal coating tridymite, and also capping one of the topaz crystals, from the Conca Cannas quarry, Masullas, Mt. Arci, Oristano Province, Sardinia, Italy.
Fragile tufted kidwellite from Indian Mountain, Cherokee Co., Alabama, USA. Collected in or before 1983.
A couple of very sharp analcime crystals nestled amongst pale pink kutnohorite from the Emilie Mine (Bülten-Adenstedt Mine), Peine, Lower Saxony, Germany. It’s nice to see zeolites in unusual combinations.
A lovely red almandine crystal as an inclusion in muscovite mica from the Spotted Tiger Mine, Mt Riddock Station, Harts Range (Harts Ranges; Hartz Range; Hartz Ranges), Central Desert Region, Northern Territory.
Monazite-(Ce) crystals make up most of the matrix of this specimen from Cow Flat (Bower Bird), Torrington, Clive Co., New South Wales. A couple of smoky quartz crystals are embedded. Ex Australian Museum, Sydney.
Stunning yellow stolzite crystals associated with cream-yellow-brown hoppered pyromorphite from the old Broken Hill Proprietary Mine (Proprietary Mine; BHP Mine), Broken Hill, Yancowinna Co., New South Wales.
One of the most iconic smoky quartz localities in Australia, Mooralla, Southern Grampians Shire, Victoria. This locality, which is a designated fossicking area, has produced many stunning smoky quartz specimens since the 1960s. They occur...
Hard to photograph these very glassy crystals of gmelinite-Na from Cairns Bay, Flinders area, Victoria.
Blue-green pseudomalachite balls on dark green libethenite crystals from the Lake Boga granite quarry, Lake Boga, Swan Hill Rural City, Victoria.
From the mine best known for its crocoite comes a rarer occurrence, zoned mimetite crystals. There are interesting rounded surface features too. Probably where the mimetite was attached to ferro-manganese oxides. From the famous Adelaide...
10028 Barite, Fluorite, Quartz, Wulfenite, Unknown black needles, Blue Star prospect, South Canyon District, Dona Ana Co., New Mexico, USA
Colourless and purple fluorite cubes and colourless quartz crystals on white barite. Minor yellow wulfenite. Unknown black needles.
Classic Red Cloud wulfenite crystal group with tiny mimetite crystals.
0877 Dioptase, Wulfenite, Minrecordite, Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia
2.2×1.6×1.5cm specimen of dioptase crystals with wulfenite crystals and zincian dolomite or minrecordite (not known if tested) from Tsumeb, Namibia. Ex Virgin Valley Sales. View Larger Map | Get Directions
Specimen is 40mm across.
Crocoite, Pyromorphite, Platt Mine, Dundas, Tasmania