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
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Rhodochrosite, Pyrite, Sphalerite & Quartz (W.S. Logan Coll.)
Huaron mining district, Huayllay district, Pasco department, Peru
4.6 x 4.1 x 2.0 cm
Siderite "pinecone" (uncommon locale) Dr. B. Phillips Coll.
Salmon Creek, Tenino, Thurston Co., Washington
9.2 x 8.1 x 7.0 cm
Axinite-(Fe) (Type Localtity - superb) Robertson Coll.
Bourg d'Oisans, Isere, Auvergne-Rhone-Alpes, France
2.9 x 1.4 x 0.6 cm
Titanite (Sanabria Coll.)
Los Serranos Quarry, Albatera, Alicante, Valencian Community, Spain
3.3 x 2.6 x 2.4 cm
Rhodochrosite w/ Sphalerite, Galena & Quartz (W.S. Logan Coll.)
Postosi Mine, Santa Eulalia, Chihuahua, Mexico
4.9 x 4.5 x 2.4 cm
large, rare Manganoan Calcite twin (fluorescent!) w/ Quartz (Nowakowski Coll.)
Krushev dol mine, Madan ore field, Rhodope Mts, Smolyan Oblast, Bulgaria
13.5 x 11.5 x 8.5 cm
Genthelvite, Magnetite & Quartz
Huanggang Fe-Sn deposit, Hexigten Banner, Inner Mongolia A.R., China
2.7 x 2.5 x 2.1 cm
Mimetite var. Campylite (old classic) Robertson Coll.
Dry Gill Mine, Caldbeck Fells, Cumbria, England
5.7 x 4.5 x 3.0 cm
Calcite incl. w/ Hematite (Tom Wolfe Coll.)
Vieja Mine, Francisco Portillo, Santa Eulalia, Chihuahua, Mexico
13.2 x 9.3 x 6.3 cm
Copper w/ Cuprite & Bornite (Ken Roberts Coll.)
Itauz Mine, Zhilandy group, Satpayev, Karaganda, Kazakhstan
10.7 x 7.3 x 1.4 cm
Goethite in Quartz geode
Ikiss, Amerzgane, Ouarzazate Province, Draa-Tafilalet Region, Morocco
7.8 x 6.0 x 3.8 cm
Arsentian Vanadinite (Endlichite) on Wulfenite (Dr. B. Phillips Coll.)
Erupcion Mine, Los Lamentos, Chihuahua, Mexico
10.2 x 7.7 x 3.6 cm
Bisbeeite on or after Shattuckite (Robertson Coll.)
Shattuck Mine, Bisbee, Cochise Co., Arizona
2.2 x 1.9 x 1.8 cm
Pyrite & Quartz (rare Mexico)
Cananea, Mun. de Cananea, Sonora, Mexico
7.4 x 6.3 x 3.3 cm
Goethite (rare, old - classic locale) Robertson Coll.
Siegen, Siegerland, North Rhine-Westphalia, Germany
8.3 x 7.5 x 3.9 cm
Marcasite, Pyrite & Calcite on Dolomite (Dr. B. Phillips Coll.)
Sweetwater Mine, Viburnum Trend, Reynolds Co., Missouri
15.2 x 12.5 x 4.6 cm
Gem DT Topaz w/ Apatite & Cleavelandite (rare combo) Ted Bartels Coll.
Dassu, Braldu Valley, Skardu District, Gilgit-Baltistan, Pakistan
4.5 x 4.4 x 3.4 cm
Baryte xls on Galena (old classic) Robertson Coll.
Christian-Levin Mine, Essen, Ruhr Coal Mining area, North Rhine-Westphalia, Germany
5.5 x 4.9 x 3.0 cm
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