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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.
CT406 - Vaugnatite $ 200 Copper King Mine, Red Mountain, Mendocino Co., California, USA small cabinet - 6 x 5 x 2.5 cm ![]() ![]() ![]() Glassy, colorless/white orthorhombic crystals of vuagnatite, a rare silicate mineral, on matrix. Collected by Chuck Trantham in 1982. His old label shows a price of $200.
CT304 - Meta-Tuyamunite $ 40 Shirley Basin, Carbon Co., Wyoming, USA miniature - 3.5 x 2.5 x 1.5 cm ![]() ![]() ![]() Yellow Meta-Tuyamunite, a rare uranium mineral in the Carnotite group of minerals, on matrix. Ex. Chuck Trantham collection.
CT458 - Pyrargyrite $ 280 Fresnillo, Zacatecas, Mexico thumbnail - 2.2 x 1.8 x 1.5 cm ![]() ![]() ![]() ![]() ![]() Cluster of diverging Pyrargyrite crystals. Largest crystal is 9mm thick. These are sometimes refered to as 'ruby silver' due to the silver content of the mineral and the deep red coloration.
CT505 - Hemimorphite $ 225 79 Mine, Gila Co., Arizona, USA small cabinet - 5.3 x 4.7 x 3 cm ![]() ![]() ![]() Vug completely filled by radial masses of light blue Hemimorphite crystals. Ex. Chuck Trantham collection. Undamaged.
K197 - Prehnite $ 650 Merelani Hills, Arusha, Tanzania small cabinet - 8 x 5.5 x 4 cm ![]() ![]() ![]() ![]() Large, thick translucent crystals of yellow Prehnite. This is a great cluster of crystals with top color and crystal form. Despite a bit of chipping, it represents the best of Merelani Prehnite, considered among the best in the world.
CT456 - Morganite on Quartz $ 350 Minas Gerais, Brazil small cabinet - 7.5 x 6 x 5.5 cm ![]() ![]() ![]() ![]() ![]() Colorless Quartz crystals with attached Morganite. The Morganite are etched with glassy luster, transparent, with a pink coloration. Ex. Chuck Trantham personal collection with label.
CT467 - Calcite on Amethyst $ 275 Valencia Mine, Guanajuato, Mexico small cabinet - 9 x 8.5 x 3 cm ![]() ![]() ![]() ![]() ![]() White Calcite crystals atop Amethyst crystals. The Calcite crystals are hollow.
CT401 - Spinel with Pargasite $ 280 Twin Lakes Limestone deposit, Lower Twin Lake, Twin Lakes, Fresno Co., California, USA small cabinet - 5.2 x 4 x 1.3 cm ![]() ![]() ![]() ![]() Well formed, translucent octahedrons of blue Spinel to 4mm in size associated with brown Pargasite crystals. Sawcut on back. Collected by Chuck Trantham and Al McGuinness in 1986. Chuck's label indicates locality as 'Locality 2, Twin Lakes area, Fresno Co., California, USA'.
CT510 - Heulandite on Quartz $ 220 Prospect Park, New Jersey, USA miniature - 4 x 2.8 x 2.5 cm ![]() ![]() ![]() ![]() Large, fine quality Heulandite crystal atop drusy Quartz crystals. Ex. Chuck Trantham collection. Old label indicates it was purchased by Chuck from Frazier's minerals in 1991 and was formerly in the collection of Paul Patchick (#1102). Complete and undamaged.
CT482 - Rhodochrosite $ 125 Cananea, Sonora, Mexico thumbnail - 3 x 2 x 1.7 cm ![]() ![]() ![]() ![]() Pink Rhodochrosite crystals on matrix. Ex. Chuck Trantham collection. Old label indicates it was purchased by Chuck at an estate sale in Atherton, California in 1999.
CT541 - Neptunite with Joaquinite $ 950 Gem Mine, San Benito Co., California, USA small cabinet - 6.5 x 5 x 2 cm ![]() ![]() ![]() ![]() ![]() Thick, lustrous black Neptunite crystals on a flat matrix of Natrolite over schist. This is an old Steve Perry specimen that I purchased from Steve about 20 years ago and have kept in my collection ever since. All the crystals are terminated and undamaged, the main crystal is 2.5cm long. There are small brown Joaquinite crystals on the Natrolite.
CT546 - Phlogopite $ 120 Pain Pyit, Mogok, Myanmar miniature - 4 x 2.5 x 2.5 cm ![]() ![]() ![]() ![]() ![]() Gem Phlogopyte crystals in white marble matrix. Old material from the Chuck Trantham collection.
CT547 - Quartz $ 75 Unknown thumbnail - 2 x 2 x 2 cm ![]() ![]() ![]() Beautiful and undamaged japan-twin Quartz. No locality information available. Ex. Chuck Trantham collection.
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