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CT350 - Analcime $ 275 North Table Mountain, Golden, Colorado, USA miniature - 3.5 x 3.2 x 3 cm ![]() ![]() ![]() ![]() Well formed, equant single Analcime crystal with smaller attached crystals. This locality has produced Colorado's finest zeolites and this is considered a large crystal for the locality. Complete all around and undamaged.
CT100 - Silver $ 250 Batopilas, Chihuahua, Mexico thumbnail - 2.8 x 2.5 x 1.2 cm ![]() ![]() ![]() ![]() ![]() Specimen of Silver crystals from Batopilas. Not the typical 'herringbone' style for the locality, this is a dense mass of crystals, some showing platy, cubic crystals to 3mm. Ex. Chuck Trantham collection.
CT425 - Chlorite after Garnet Oldman Ranch, Wyoming, USA miniature - 5 x 4 x 3.2 cm ![]() ![]() ![]() ![]() Large, complete dodecahedral crystal of Chlorite after Garnet. There is an indentation on the back face, otherwise it has perfect flat faces all around. Ex. Chuck Trantham collection acquired from Dyck's Minerals in 1987.
CT404 - Natrolite $ 275 Chimney Rock Quarry, Somerset Co., New Jersey, USA small cabinet - 5.2 x 0.9 x 0.9 cm ![]() ![]() ![]() ![]() ![]() Single well terminated Natrolite crystal. Transparent crystal with some small crystals and coatings on two sides. Undamaged and even has a nice phantom about 1cm down from the termination. Old material from the classic USA locality that produced what are considered some of the world's best Natrolites.
CT405 - Natrolite $ 275 Chimney Rock Quarry, Somerset Co., New Jersey, USA miniature - 4.6 x 1.3 x 1 cm ![]() ![]() ![]() ![]() ![]() Single well terminated Natrolite crystal. Transparent and undamaged. Old material from the classic USA locality that produced what are considered some of the world's best Natrolites.
CT248 - Mimetite on Cerussite $ 150 Tsumeb, Namibia thumbnail - 2.5 x 2 x 2 cm ![]() ![]() ![]() Glassy Cerussite crystal partially coated by yellow Mimetite (old label says Beaverite) on a Mottramite coated matrix.
CT147 - Enargite $ 75 Butte, Silver bow Co., Montana, USA thumbnail - 2.8 x 2 x 1.5 cm ![]() ![]() ![]() ![]() Well terminated Enargite crystals to 7mm wide. Thumbnail sized specimen of a Butte and USA classic.
CT432 - Marcasite Cap Blanc-Nez, Escalles, Pas-de-Calais, Hauts-de-France, France miniature - 3.8 x 3.6 x 3 cm ![]() ![]() ![]() ![]() ![]() Pristine cluster of golden metallic Marcasite crystals on matrix. The crystal group is 3cm wide with individual twinned crystals to 1cm in size. I understand these were found between the mid 1970s and the mid 1980s and collecting here is now prohibited because the site is now a natural reserve. Ex. Chuck Trantham collection acquired from Al McGuinness with label.
CT484 - Manganotantatlite $ 280 Alto do Giz pegmatite, Equador, Rio Grande do Norte, Brazil thumbnail - 2.1 x 1.8 x 1.1 cm ![]() ![]() ![]() ![]() ![]() Well terminated single crystal showing good red coloration on the sides.
CT451 - Fluorite $ 650 Berbes, Asturias, Spain small cabinet - 7 x 6 x 3.5 cm ![]() ![]() ![]() ![]() ![]() ![]() Cluster of pink/purple color zoned Fluorite crystals. Excellent luster and transparency.
CT453 - Tourmaline with Lepidolite $ 3800 Pederniera Mine, Minas Gerais, Brazil cabinet - 9.5 x 2.5 x 2.5 cm ![]() ![]() ![]() ![]() ![]() ![]() Double-terminated cluster of 'Indicolite' with deep blue color. One end shows cat's-eye growth and has an attached cluster of Lepidolite. Complete and undamaged. Weighs 76.3 grams.
CT346 - Quartz with Calcite $ 150 Bog Mine, American Fork Mining District, Wasatch Mountains, Utah Co., Utah, USA small cabinet - 6 x 5 x 3 cm ![]() ![]() ![]() ![]() ![]() Skeletal Quartz crystals and scalenohedral yellow Calcite crystals from an obscure former mine in the Wasatch Mountains. The Quartz cluster is complete and undamaged. Rare old specimen from the Chuck Trantham collection.
CT336 - Azurite, Malachte after Azurite $ 300 Tsumeb, Namibia small cabinet - 6.5 x 4 x 3.5 cm ![]() ![]() ![]() ![]() Sharp crystals of blue Azurite intermixed with green crystals of Malachite after Azurite pseudomorphs on a light matrix with additional yellow/green mineralization. Undamaged crystals with pseudomorphs that reach 2.2cm, some of which are double-terminated.
CT512 - Achtaragdite $ 120 Akhtaragda River mouth, Vilyui River Basin, Mirninsky District, Sakha Republic (Yakutia), Russia thumbnail - 1.5 x 1.3 x 1.2 cm ![]() ![]() ![]() ![]() Achtaragdite is a rare pseudomorph of a hydrogrossular-chlorite-carbonate mineral after what is believed to be Helvite. This is a little understood psuedo likely found many decades ago at the type locality for Grossular garnet in Siberia. It is a fine example with a well formed tetrahedron of the form of the former Helvite crystal.
CT462 - Vaugnatite $ 150 Copper King Mine, Red Mountain, Mendocino Co., California, USA small cabinet - 7.2 x 2.5 x 2 cm ![]() ![]() ![]() Glassy, colorless/white orthorhombic crystals of vuagnatite, a rare silicate mineral, on matrix. Collected by Chuck Trantham in 1982 and valued at that time at $100.
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