PRE-DENVER MINERAL COLLECTION AUCTIONS (set 1 of 2) featuring OLD CLASSICS, GEM CRYSTALS and RARE SPECIES - ends Thursday Aug 23, 2018

ends Thursday August 23, 2018
at 6:30 PM (Central Time Zone)

A HUGE selection of specimens in this week's auctions with a mix of gem crystals, classics, contemporary beauties and rare species ! We are continuing to process material from the wonderful old mineral collections of Kay Robertson along with fine minerals from numerous other collections and purchases including 1980s-90s specimens from the Ted Bartels Collection and a few choice pieces from others. Lots of rare mineral specimens here that are hard to find at ANY price, let alone at auction!


Some of the highlights from this week's include:

1. Gem TOPAZ w/ APATITE from Pakistan, & and old GERMAN TOPAZ
2. NEW FIND of AQUAMARINE & SCHORL from the Erongos
3. Superb Michigan COPPER in CALCITE & COPPER specimens
4. FINE RUSSIAN COPPER and other Ken Roberts Collection specimens
5. Large, FLUORESCENT AND TWINNED MANGANOAN CALCITE from Madan
6. RHODOCHROSITES from the Logan Collection 7. RHODOCHROSITE CABINET DISPLAY PIECE ($$$) from late 1990s - SWEET HOME MINE
Filter By

Tetrahedrite, on matrix(classic locale) Robertson Coll.
Kleinkogel, Brixlegg - Schwaz area, Inn valley, North Tyrol, Austria
6.7 x 4.8 x 2.2 cm
Weird phantom Quartz w/ Chlorite (Ken Roberts Coll.)
Paulista, Presidente Kubitschek, Minas Gerais, Brazil
8.0 x 3.6 x 3.3 cm
Azurite "sun"
Malbunka Copper Mine, Areyonga, Northern Territory, Australia
7.6 x 5.2 x 2.4 cm
Rose Quartz (classic locale - 1959 find)
Berilo Branco claim, Sapucaia do Norte, Galileia, Minas Gerais, Brazil
4.7 x 3.4 x 2.5 cm
Color-zoned Fluorite & Quartz w/ bitumen (RARE - old) Ken Roberts Coll.
Hill Mine, Cave-in-Rock Sub-District, Hardin Co., Illinois
3.3 x 2.6 x 1.6 cm
Smithsonite ps. After Calcite (Ken Roberts Coll.)
San Antonio Mine, Santa Eulalia, Chihuahua, Mexico
6.8 x 4.9 x 3.8 cm
Orbicular Jasper (old,California) Ken Roberts Coll.
Paradise Valley, Santa Cruz Mts, Santa Clara Co., California
13.5 x 13.2 x 9.6 cm
Smithsonite & Anglsesite (RARE combo- classic old Ireland locale)
Sheshodonnell East Mine, The Burren, Co. Clare, Ireland
4.1 x 3.4 x 2.5 cm
Malachite ps. After Azurite
Milpillas Mine, Cuitaca, Sonora, Mexico
4.0 x 2.9 x 1.6 cm
Spessartine Garnet on Smoky Quartz
Wushan Spessartine Mine, Tongbei, Fujian Province, China
5.0 x 2.4 x 1.9 cm
Rhodochrosite & Quartz (W.S. Logan Coll.)
Remedios Mine, Taxco de Alarcon, Guerrero, Mexico
6.4 x 3.0 x 2.5 cm
Wulfenite (classic locale) Robertson Coll.
Tsumeb Mine, Tsumeb, Namibia
7.7 x 4.2 x 3.8 cm
Crystallized Copper (superb) ex Private Collection
Pewabic Lode, Houghton Co., Michigan
3.8 x 3.5 x 2.2 cm
Creedite (Chinese locality!)
Qinglong Mine, Dachang Sb ore field, Guizhou Province, China
4.0 x 3.2 x 2.5 cm
Aquamarine w/ Schorl (NEW FIND)
Erongo Mts, Erongo Region, Nambia
8.0 x 6.0 x 5.2 cm
Salammoniac (NEW FIND - rare locale)
Cuajone Mine, Tala, Mariscal Nieto Province, Moquegua Department, Peru
6.7 x 5.4 x 3.1 cm
Gemmy bi-colored Fluorite (NEW find)
Quanzhou City, Fujian Province, China
13.0 x 4.5 x 4.0 cm
Large Calcite (classic locale) Tom Wolfe Coll.
320' Level, Valenciana Mine, Guanajuato, Guanajuato, Mexico
21.3 x 15.7 x 9.3 cm
Dolomite & Calcite on Sphalerite (RARE - old) Robertson Coll.
Kappel Mine, Schauinsland Pb-Zn mining district, Black Forest, Baden-Wurttemberg, Germany
9.7 x 7.7 x 4.3 cm
Baryte (classic locale) Ted Bartels Coll.
Paleokamariza Mines, Lavrion District, Attiki Prefecture, Greece
14.1 x 8.3 x 3.1 cm
Topaz var. Pyknite w/ Zinnwaldite (old classic) Robertson Coll.
Tin mine, Altenberg, Erzgebirge, Saxony, Germany
10.1 x 7.1 x 5.2 cm
Rhodochrosite, Fluorite, Quartz, Apatite, etc
Sweet Home Mine, Alma, Park Co., Colorado
10.9 x 5.8 x 4.0 cm
Turquoise (RARE old Arkansas)
Mona Lisa Mine, Porter Mountain, Gilham, Polk Co., Arkansas
7.0 x 5.7 x 2.3 cm
Stannite w/ Scorodite, etc. (rare old classic) Robertson Coll.
Cligga Head, Perranporth, Perranzabuloe, Cornwall, England
7.7 x 7.3 x 3.8 cm
Cerussite on Galena (old classic - ilustrated) Robertson Coll.
Stribro (Mies), Plzem Region, Czech Republic
6.5 x 4.7 x 4.3 cm
Gemmy Amethyst xls
Piedra Parada (Las Vigas), Veracruz, Mexico
5.5 x 5.2 x 1.7 cm
Mineral Auctions