SPECIAL AUCTION: RARE SPECIES & CLASSIC OLD MINERALS
from the Kay Robertson Mineral Collection
ends TUESDAY January 8th, 2019

NOTE SPECIAL END DAY: TUESDAY January 8th, 2019
at 630 PM (Central Time Zone)!


The Kay Robertson collection has thus far afforded a great deal of intellectual and mineral pleasure to us here at The Arkenstone, as well as collectors around the globe. Many specimens are of historical and mineralogical interest, so working with them has been a truly gratifying experience.
With 5 updates and several previous auctions already done, we thought it would be a fun change of pace to produce a totally dedicated "Kay auction," and let things go where they may. Please note that a number of these specimens were purchased by Kay 50-60 years ago, at prices that ranged from several dollars to several hundreds of dollars at the time. If these were the prices a half-century ago, just imagine what the possible values are now. There might be some real bargains to be had! Text and photos by collector, Jeff Starr.
For those unfamiliar with the Kay Robertson Collection, Kay is a prominent California collector who specialized in European classics (see our blog at www. https://www.irocks.com/kay-robertson-a-treasure-in-the-mineral-collecting-world ; and the 50+ page article in the German Magazine "Mineralien Welt" November-December 2017). Happy hunting!
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Arsenopyrite, Galena, and Calcite
Freiberg District, Erzgebirge, Saxony, Germany
7.3 x 5.9 x 2.1 cm
Kyanite
Moorins, Tasmania, Australia
4.7 x 1.2 x 0.4 cm
Copper (spinel twinned)
Chino Mine, Santa Rita, Santa Rita District, Grant Co., New Mexico, USA
5.9 x 3.2 x 1.1 cm
Amethyst Scepter
Las Vigas, Vera Cruz, Mexico
4.4 x 1.3 x 0.9 cm
Wulfenite
Ojuela Mine, Mapimu, Durango, Mexico
5.5 x 3.3 x 3.2 cm
Clinoclase with Chalcophyllite
Majuba Hill Mine, Antelope District, Pershing Co., Nevada, USA
6.8 x 6.0 x 2.6 cm
Quartz var. Chalcedony var. Jasper
Kandern, near Auggen, Mullheim, Baden-Wurttemberg, Germany
6.5 x 5.2 x 3.2 cm
Smoky Quartz with Chlorite
Giuv Valley, Tujetsch, Grischun, Switzerland
5.4 x 3.2 x 2.3 cm
Fluorite
Limestone quarry, Bergheim, Ribeauville, Haut-Rhin, Grand Est, France
6.6 x 4.6 x 3.6 cm
Siderite and Calcite
Friedrich-Wilhelm Mine, Herdorf, Siegerland, Rhineland-Palatinate, Germany
8.2 x 5.5 x 3.7 cm
Tourmaline in Quartz
Himalaya Mine, Gem Hill, Mesa Grande District, San Diego Co., California, USA
4.7 x 4.0 x 3.9 cm
Azurite with Malachite
Schonbrunn, Oelsnitz, Vogtland, Saxony, Germany
6.3 x 5.5 x 2.7 cm
Cerussite
Bleialf, Rhineland-Palatinate, Germany
4.6 x 3.5 x 2.1 cm
Baryte
Palos Verdes Hills, Palos Verdes peninsula, Los Angeles Co., California, USA
15.3 x 6.8 x 5.1 cm
Amazonite and Smoky Quartz
Lake George, Park Co., Colorado, USA
4.2 x 3.7 x 3.6 cm
Pyrargyrite (historic, superb TN)
St Andreasberg, St Andreasberg District, Harz, Lower Saxony, Germany
1.1 x 1.0 x 0.4 cm
Clinoclore var. Chromian Clinoclore
Kop Daglari, Erzurum Province, Eastern Anatolia Region, Turkey
4.2 x 3.2 x 2.2 cm
Fluorite (fluorescent) with Schorl
Nagar, Hunza Valley, Gilgit District, Gilgit-Baltistan (Northern Areas), Pakistan
4.5 x 4.1 x 4.0 cm
Wulfenite on Calcite
Erupcion Mine, Los Lamentos Mts, Mun. de Ahumada, Chihuahua, Mexico
11.0 x 8.3 x 5.8 cm
Goethite
Herdorf, Siegerland, Ahrweiler, Rhineland-Palatinate, Germany
14.3 x 5.0 x 3.2 cm
Anapaite and Baryte
Kerch peninsula, Crimea peninsula, Crimea, Ukraine
6.7 x 5.7 x 1.4 cm
Dioptase, Wulfenite, Macquartite (TL), Cerussite, and Fornacite (?)
Mammoth-Saint Anthony Mine, Tiger, Mammoth District, Pinal Co., Arizona, USA
2.6 x 2.6 x 1.5 cm
rare red Chabazite
Strzegom, Strzegom-Sobotka Massif, Lower Silesia, Poland
2.5 x 2.4 x 2.1 cm
Balangeroite (Type Locality)
Poggio San Vittore asbestos mine, Balangero, Torino Province, Piedmont, Italy (TL)
4.1 x 3.7 x 2.3 cm
Fluorite (fluorescent)
Rabenstein, nr Sarntal, Tyrol, Austria
7.1 x 6.5 x 3.3 cm
Calcite
Emilie Mine (Bulten-Adenstedt Mine), Peine, Lower Saxony, Germany
8.4 x 6.9 x 4.8 cm
Prehnite
Lower New Street quarry, Paterson, Passaic Co., New Jersey, USA
9.5 x 5.0 x 3.1 cm
Celestite
Hastings County, Ontario, Canada
6.5 x 3.8 x 0.6 cm
Millerite and Siderite
Zollverein Mine, Essen, Ruhr Coal Mining area, North Rhine-Westphalia, Germany
9.0 x 7.0 x 2.3 cm
Mica var. Eastonite (old varietal Type Locality)
Chestnut Hill, Easton, Northampton Co., Pennsylvania, USA (TL)
8.2 x 7.1 x 0.4 cm
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