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81 specimens listed
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Klebelsbergite on Stibiconite with Stibnite, Quartz etc.
stock #17.1-415
Pereta Mine, Scansano, Grosseto Province
Tuscany, Italy
7.2 x 5.5 x 3.8 CM (cabinet)
price: $330
Late Summer 2021

Three dimensional vuggy matrix with several altered Stibnite crystals that are now the matrix for blood red Klebelsbergite crystals. There are also some sprays of colorless needles and small yellow balls that are not identified though we suspect the needles are also Klebelsbergite. Most specimens of this mineral are micromounts and not so well visible as this. The crystals of Stibnite/ Stibiconite reach to a little over 3 CM long and are well-protected in the vugs. Ex collection of Glenn Petrie and Brizzi Gioncarlo (Florence, Italy). The older labels mention Kermesite which is not known from this locality. I can not see anything that looks like this specie and suspect it is an error, but it could be possible in tiny crystals. . The Pereta Mine is not well-known outside of Italy but it is an important and rich old locale that has been the source of many rare Antimony minerals. This is a rich example of several alterations of Stibnite and while very impressive under magnification it is also attractive as a normal, eye visible display specimen.

Mimetite - modern classic
stock #21.1-291
San Pedro Corralitos, Municipio de Casas Grandes
Chihuahua, Mexico
2.8 x 2.3 x 2.7 CM (thumbnail)
price: $690
Late Summer 2021

From San Pedro Coralitos, an older specimen with excellent form. Well-defined bright yellow balls of Mimetite are in both clusters and isolated on contrasting matrix. I have not seen many good thumbnails from this famed locality where most specimens were larger but this one is especially esthetic. In perfect condition on the display side, there is only a small contact on the backside of one ball not visible on display. There is no damage anywhere, this is a competition quality thumbnail.

SOLD Milarite, Quartz and Valencianite
stock #SOLD A7-382-(463)
Valenciana Mine (Mina La Valenciana), Municipio de Guanajuato
Guanajuato, Mexico
8.2 x 6 x 2 CM (cabinet)
price: $0
Late Summer 2021

Several bright yellow Milarite crystals are scattered on a well-crystalized matrix of milky Quartz and sharp Valencianite crystals. This is from the find made decades ago at the Valenciana Mine and this specimen is quite rich, this specimen has more than a dozen crystals reaching up to 5 mm. The Valencianite (a type of Adularia as this is an Orthoclase) is especially sharp and partly transparent. This is complemented with the Quartz crystals which are mixed in and give a nice extra bit of luster.

Fluorite - gemmy
stock #21.1-317
Cantera Llamas, Duyos, Caravia
Asturias, Spain
3.1 x 2.3 x 2 CM (thumbnail)
price: $550
Late Summer 2021

Limpid clear and perfect a single modified cube of light violet Fluorite on a small matrix druse of Quartz. Some faces are perfectly glass-like while other have some etched growth structures. The insides of the cube are fully transparent with no inclusions. From the small but remarkable locality of Cantera Llamas, this is far better than typical for this find, a competition grade thumbnail. The clear cube is more impressive in person as the color and clarity are hard to render on a computer screen.

Calcite - old English
stock #21.1-288
Haile Moor Mine, Haile, Copeland
Cumbria, England
4.7 x 3.2 3.1 CM (miniature)
price: $390
Late Summer 2021

An esthetic cluster of glassy, translucent reddish- pink color Calcites from Cumbria, England. Old labels from the collection of Marie Osbonlighter and Robert Eaton are included. This Calcite is vividly Fluorescent. Most of the colorful Calcites from this region were found long ago the majority were colorless. The Haile Moor Mine is known to have produced some Calcites with Hematite inclusions that give a reddish color like this. An attractive miniature from most any point of view. Overall in fine condition though there is one cleave on a crystal that is visible at some angles (shown in these photos) but is clearly not distracting or easily noticed.

Stibnite - radiating flower form
stock #6.2-367
Nanping, Hechi prefecture
Guangxi Province, China
6.2 x 3.9 x 3.3 CM (cabinet)
price: $390
Late Summer 2021

Flower-form Stibnite in a radiating cluster of metallic crystals on a shard of matrix. From the find in Nandan in 2006, this is similar to an older find in Romania but slightly different on close exam. There is minimal matrix here just some shards of white Quartz that set off the darker metallic blades of Stibnite. Overall this has good luster but some of the individual crystals have some tiny pitting which gives a more matte finish. Excellent display impact most crystals are terminated some with prism tips others with a more jagged end. There is some damage seen by loupe exam but overall the condition is very good especially for this delicate mineral. These have not been found for many years, now they are a modern classic.

Topaz
stock #21.1-315
Hohenstein Massif, Omaruru District
Erongo Region, Namibia
1.7 x 1.2 x .6 CM (thumbnail)
price: $70
Late Summer 2021

A simple, cute small blue Topaz crystal with a tiny druse of micro Topaz that is orange-red in color. From a find in 2017 on the Hohenstein, these small Topaz were in fractured pockets on a crumbly matrix and most were found as loose crystals. We obtained several from the miners in Namibia at that time. Most of the Topaz in the find was colorless but some were this light sky blue. This is undamaged, complete and doubly terminated.

Sphalerite - gemmy crystals
stock #18-AX-418
ZCA corporation / Pierrepont Mine, Pierrepont, St Lawrence County
New York, United States
2.2 x 1.8 x 1.4 CM (thumbnail)
price: $240
Late Summer 2021

A very lustrous Sphalerite thumbnail. This is a sharp and fully transparent honey-yellow crystal from a classic Northeastern US Locality. The ZCA Mine in Saint Lawrence County has been the source of many fine minerals. This specimen is twinned as seen and has several complex growth structures on some faces as well as some flat glass-like ones as well. A few rough edges from contacts but overall in very good condition. What looks like inclusions inside the crystals in the photos is actually other crystals on the backside seen through the clear Sphalerite. Not many of these make it to the market, this specimen is from an older collection and was collected at least 25 years ago.