PRE-DENVER MINERAL COLLECTION AUCTIONS (set 1 of 2) featuring OLD CLASSICS, GEM CRYSTALS and RARE SPECIES - ends Thursday Sept 13, 2018

ends Thursday Sept 13, 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 over 100 years old, 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 and Barratt Phillips Collections. 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. Rare, rich old Cornwall CHALCOCITE & BORNITE
2. Superb large Indian APOPHYLLITE & STILBITE
3. Unusual large HEMATITE after MARCASITE from Egypt
4. Rich large CERUSSITE from Bunker Hill
5. Large AMETHYST w/ CALCITE from Brazil
6. Sculptural PYRRHOTITE "ROSE" from Trepca
7. Rare Arkansas TURQUOISE
8. RHODOCHROSITES from the Logan Collection including an illustrated piece
9. Classics, rarities and unusual pieces from the Kay Robertson & Barratt Phillips collections
- Old rare Norway EPIDOTE from the Des Cloizeaux and Paris Museum collections
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Chalcocite partially altered to Bornite (rare old 1800's classic)
Carn Brea Mine, Pool, Carn Brea, Cornwall, England
6.2 x 5.3 x 4.5 cm
Superb large Fluorapophyllite on Stilbite
Ahmadnagar District, Maharashtra, India
11.5 x 11.5 x 7.5 cm
Large Chevkinite-(Ce) (rare REE silicate) ex Obodda
Satil, Tangir Valley, Diamar District, Gilgit-Baltistan, Pakistan
13.7 x 8.0 x 5.0 cm
Sharp Amazonite xl (rare locality!)
Ploskaya Mt, Keivy Mountains, Murmanskaya Oblast', Northern Region, Russia
3.8 x 3.2 x 3.1 cm
Wulfenite on Marble (Robertson Coll.) - Italy!
"Delle Grigne" Lead Mine, Cascina Mugarola, Lecco Province, Lombardy, Italy
8.0 x 5.3 x 3.0 cm
Cerussite (RARE large USA piece) Soregaroli Coll.
Bunker Hill Mine, Kellogg, Shoshone Co., Idaho
10.6 x 8.3 x 6.0 cm
Large Amethyst w/ Calcite
Irai, Rio Grande do Sul, Brazil
14.7 x 13.0 x 5.3 cm
Large Cassiterite twin ex Obodda
Viloco Mine (Araca Mine), La Paz Department, Bolivia
4.7 x 3.7 x 3.3 cm
Large Calcite w/ Marcasite (rare - old Illinois) Robertson Coll.
Bautsch Mine, Galena, Galena District, Jo Daviess Co., Illinois
12.4 x 9.2 x 5.7 cm
Pyrrhotite "rose" w/ Calcite halo (fluorescent! & classic locale)
Trepca complex, Kosovska Mitrovica, District of Kosovska Mitrovica, Kosovo
10.5 x 9.6 x 5.2 cm
Smithsonite (classic Arizona) Robertson Coll.
Mammoth-Saint Anthony Mine, Tiger, Pinal Co., Arizona
3.9 x 3.1 x 2.5 cm
Malachite after Azurite on Calcite (Robertson Coll.)
Onganja Mine, Seeis, Windhoek District, Khomas Region, Namibia
3.8 x 2.4 x 2.3 cm
Hemimorphite (uncommon Tiger) Robertson Coll.
Mammoth-Saint Anthony Mine, Tiger, Pinal Co., Arizona
3.7 x 3.1 x 2.4 cm
Fine Schalenblende nodule (classic locale)
Olkusz, Olkusz District, Ma?opolskie, Poland
12.4 x 9.6 x 3.0 cm
Galena w/ Quartz (rare old combo) Robertson Coll.
Clausthal-Zellerfeld, Harz, Lower Saxony, Germany
9.7 x 6.9 x 2.5 cm
Bi-colored Fluorite (fluorescent) Soregaroli Coll.
Okorusu Mine, Otjiwarongo District, Namibia
9.3 x 7.8 x 4.3 cm
Spinel-twinned Silver & Calcite (Rukin Jelks Coll.)
New Nevada Mine, Batopilas, Chihuahua, Mexico
4.4 x 2.2 x 2.0 cm
Crocoite (Rukin Jelks Coll.)
Red Lead Mine, Dundas, Tasmania, Australia
3.3 x 2.4 x 1.6 cm
Goethite (old classic Colorado) Dr. B. Phillips Coll.
Crystal Peak area, Teller Co., Colorado
11.5 x 6.2 x 4.0 cm
Large Grossular Garnet (old) Dr. B. Phillips Coll.
Sierra de Cruces, Coahuila, Mexico
5.0 x 4.2 x 4.0 cm
Bi-colored Tourmaline xls
Morro Redondo mine, Coronel Murta, Minas Gerais, Brazil
4.5 x 1.7 x 1.0 cm (Largest of 3)
Wulfenite (old - classic Mexico) Robertson Coll.
Erupcion Mine, Los Lamentos, Chihuahua, Mexico
7.9 x 5.2 x 4.7 cm
Sharp Franklinite xl (Johansson Coll.)
Franklin Mining District, Sussex Co., New Jersey
2.1 x 1.7 x 1.7 cm
Mineral Auctions