PRE-DENVER SHOW FINE MINERAL COLLECTION and INVENTORY LIQUIDATION AUCTION (set 2 of 2) - FEATURING SPECIMENS FROM THE KAY ROBERTSON COLLECTION - end Thursday September 6th, 2018

Ends Thursday, September 6th, 2018
at 6:45 PM (Central Time Zone)


We have a great selection of material that we picked up over the last few months along with rarities, unusual pieces, gem crystals, classics and display specimens. Look for new goodies from Tucson along with new collection acquisitions to appear in the coming weeks. You'll even find a few fossils, carvings / lapidary items and gemstones mixed in every now and then. We'll still have selections from various collections we've obtained including Willard Wulff, Francesco Bedogne, Rolando Gioia, Charlie Key and plenty of pieces from Kay Robertson along with various dealers' inventories. Look here for the not so typical mineral specimens along with plenty of your favorites. We don't just offer the "standard 20 species", but an eclectic mix of specimens that appeal to everybody! Enjoy!

Some of the highlights from this week's auction include:

1. Gorgeous octahedral green FLUORITE from Riemvasmaak, South Africa
2. Wonderful emerald green DIOPTASE crystals from Kimbedi, Republic of Congo
3. Beautiful, richly colored, multi-color TOURMALINE crystal with Albite from Afghanistan
4. Rare MONOHYDROCALCITE specimen from the Sunnyside Mine, Colorado
5. WATER CLEAR, COLORLESS "ICE" FLUORITES on matrix from the Huanggang Fe-Sn deposit, China
6. A very gemmy 100+ gram AQUAMARINE crystal group from Brazil! (ex Rolando Gioia Collection)
7. A GEM quality, doubly-terminated QUARTZ crystal from Arkansas with very pronounced "r" faces (ex Francesco Bedogné Collection)
8. An incredibly aesthetic display specimen of ILMENITE on matrix from the TYPE LOCALITY in Russia!
9. Page 2 features assorted worldwide minerals (focusing on European localities) from the Kay Robertson Collection
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Fluorite (green octahedra)
Riemvasmaak, Kakamas District, Northern Cape Province, South Africa
8.5 x 4.3 x 3.7 cm
Hematite with epitaxial Rutile (classic material)
Cavradischlucht, Val Curnera, Tavetsch, Vorderrheintal, Graubunden, Switzerland
2.0 x 1.7 x 0.4 cm
Dolomite (twins) with GEM Quartz
Pomba Pit, Serra das Eguas, Brumado, Bahia, Brazil
5.0 x 3.5 x 2.3 cm
Dioptase
Kimbedi, Mindouli District, Pool Department, Republic of Congo (Brazzaville)
6.8 x 4.0 x 3.6 cm
Adamite
Ojuela Mine, Mapimi, Durango, Mexico
10.1 x 6.7 x 5.0 cm
Smoky Quartz (Japan-Law Twin)
Mina Tiro Estrella, El Capitan Mts, Capitan District, Lincoln County, New Mexico
3.2 x 3.0 x 0.5 cm
Fluorite (GEM "ice" crystals) with Calcite and Hedenbergite
Huanggang Fe-Sn deposit, Hexigten Banner, Ulanhad League, Inner Mongolia Autonomous Region, China
5.7 x 4.8 x 3.3 cm
Bixbyite
N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manganese field, Northern Cape Province, South Africa
1.8 x 1.2 x 1.1 cm
Brucite (beautiful color)
Balochistan, Pakistan
3.7 x 3.1 x 1.6 cm
Prehnite on Quartz
Brandberg area, Brandberg District, Erongo Region, Namibia
6.7 x 4.7 x 2.3 cm
Spessartine Garnet on Microcline
Wushan Spessartine Mine, Tongbei, Yunxiao Co., Zhangzhou Prefecture, Fujian Province, China
8.6 x 5.1 x 2.4 cm
Amazonite (ex Dave Bergman Collection)
R. A. Kosnar claim on Yucca Hill, Steven's Ranch, near Lake George, Park County, Colorado
3.3 x 3.1 x 1.8 cm
Hematite (high luster)
N'Chwaning Mines, Kuruman, Kalahari manganese field, Northern Cape Province, South Africa
3.8 x 2.8 x 1.8 cm
Olmiite
N'Chwaning Mines, Kalahari manganese fields, Northern Cape Province, South Africa
2.1 x 1.4 x 1.3 cm
Vanadinite
Rowley Mine, Theba, Painted Rock Mts, Maricopa County, Arizona
3.4 x 2.4 x 1.8 cm
Goldmanite (rare Garnet species)
Rybnicek, Pezinok Co., Bratislava Region, Slovakia
4.6 x 4.3 x 3.4 cm
Vauxite with Paravauxite and Childrenite
Siglo XX Mine, Llallagua, Bustillo Province, Potosi Department, Bolivia (Type Locality for two species)
2.8 x 1.6 x 0.8 cm
Lindgrenite (very rare) (ex Josef Vajdak)
Chuquicamata Mine, Chuquicamata District, Calama, El Loa Province, Antofagasta Region, Chile (Type Locality)
3.6 x 3.0 x 2.2 cm
Goethite with Calcite (classic material) (ex Josef Vajdak)
Vrancice, Pribram, Bohemia, Czech Republic
11.7 x 8.8 x 4.2 cm
Tetrahedrite (rare locality specimen) (ex Kay Robertson Collection)
Stahlberg Mine (Schwabengrube), Musen, Hilchenbach, Siegerland, North Rhine-Westphalia, Germany
6.2 x 3.7 x 1.7 cm
Erythrite (rare locality) (ex Kay Robertson Collection)
Sara Alicia Mine, San Bernardo, Mun. de Alamos, Sonora, Mexico
4.1 x 2.8 x 0.7 cm
"Porricin" (A variety of Aegirine-Augite) (ex Kay Robertson Collection)
Kottenheim, near Mayen, Eifel, Rhineland-Palatinate, Germany
8.8 x 4.8 x 2.6 cm
Mineral Auctions