![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
  | |
![]() |
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.
CT460 - Ruby $ 350 Mogok, Myanmar thumbnail - 1 x 0.9 x 0.4 cm ![]() ![]() ![]() Uncommon (for Mogok) tabular Ruby crystal, translucent with good color.
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 psuedomorphs on a light matrix with additional yellow/green mineralization. Undamaged crystals with psuedomorphs that reach 2.2cm, some of which are double-terminated.
CT415 - Joaquinite with Neptunite $ 150 Gem Mine, San Benito Co., California, USA small cabinet - 7.5 x 4.5 x 2.8 cm ![]() ![]() ![]() ![]() Schist matrix covered by dozens of small tan crystals of Joaquinite, and likely many more present under the areas of white Natrolite. There are also a few black Neptunite crystals in association.
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.
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.
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.
©2010-2018 Marin Mineral |