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372 specimens listed
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Galena - skeletal, hoppered crystals
stock #20.1-288
San Carlos Mine, Municipio de Maunuel Benavidas
Chihuahua, Mexico
10 x 7.1 x 4.7 CM (cabinet)
price: $950


Incredible,an older (1952) Mexican Galena with textbook perfect hoppered, skeletal form crystals. This specimen is from the San Carlos Mine, which in the late 1950 era produced some world class Vanadinite. After many years with no specimens, the mine again produced fine Vanadinites and Wulfenites in 1980 and 2018. We have never seen any other good specimens of Galena from this locale, and this is a choice piece from anyplace. The Galena has a dull luster from micro a micro druze of Anglesite and some Calcite. The forms range from deep hoppers with geometric ridges to intersecting boxes and even spirals. From the collection of Skylar Alverson obtained from G. Hixon in 1952. Outstanding condition and form, just a super Galena and a choice Mexican specimen.

Citrine -Doubly terminated Quartz
stock #20.1-286

North-Western Province, Zambia
9.2 x 1.7 x 1 CM (cabinet)
price: $170


A single Quartz prism, doubly terminated and complete all around with a color range from light yellow to a darker orange yellow at the tips. From a find about 3 years ago in Zambia, the best locality informaqtion we have is North-Western Province. The habit and form is quite different from the other Zambian locale in Luapula. If this locality produces again we will likely get better details on the exact source, but until there is more info we can still appreciate the quality of these specimens. All of the faces have a light frosting but the interior is gem clear with no clouding. The crystals were sold as gem rough but a few choice pieces were saved uncut.

Hematite -well crystallized
stock #18-AX-14-355
N Chwaning Mine, Kalahari Fields, Kuruman
Northern Cape Province, South Africa
5.2 x 3.8 x 2.9 CM (cabinet)
price: $320


Stacks of sharp disk like crystals with bright luster from the famed N'Chwaning mine. From the finds over two decades ago this specimen is in outstanding condition, the only damage is on the small area of the base where it was removed. Some of the clusters are rosette-like but the aligned stacks are dominant and quite differnt from the well-known Alpine habits of Hematite.This can be displayed in most any orientation and is much more impressive in person. The edges of the crystals are quite sharp and well defined.

Boltwoodite
stock #20.1-285
Goanikontes Claim, Goanikontes, Arandis
Erongo Region, Namibia
5.7 x 4.4 x 2.9 CM (cabinet)
price: $220


Several delicate sprays of Boltwoodite crystals up to 1.3 CM (quite large for the specie) from Namibia. The small Uranium prospect at Goanikantes (Erongo region) was once the source of the worlds best Boltwoodites. This is a good example with moderate yellow color and nice contrast to the dark matrix. We can deliver this at any of the shows we attend but shipping must be arranged in advance.

Pyromorphite
stock #20.1-287
Daoping Mine, Gongcheng County, Guilin Prefecture
Guangxi Province, China
4.7 x 3.2 x 1.7 CM (miniature)
price: $880


Elongated chain crystals in an intricate cluster showing exceptionally bright color and luster. The form and overall display esthetics clearly show why the Daoping mine is considered by many as the greatest Pyromorphite locality in the world. This piece displays super well from any angle and has a lot of visual impact. In fine condition as seen, this is almost a complete "floater" just a tiny contact on the base and on the back, the front side is flawless and shows beautifully the epitaxial alignment of the stacked crystals. A lot of good pyromorphite came from Daoping from 2000 to 2017, but top grade pieces have always been uncommon and desirable.

Bournonite with Quartz
stock #AX-15-164-(C147)
Yaogangxian Mine, Yizhang County, Chenzhou Pref.
Hunan Province, China
6.5 x 4.7 x 3.8 CM (cabinet)
price: $1150


A cluster of large Bournonite crystals that are complexly intergrown with only a single Quartz crystal as matrix. Ex Shields Flynn Collection, this has the fine "gun-metal" luster that is most desirable from Yaogangxian Bournonites. Some crystals exceed 3CM and show flat terminations and classic cogswheel form twinning. In very good condition despite some small bruises this is in far better condition than most. This specimen was displayed in the Tucson show special exhibit on Chinese minerals. This was an early (2000's vintage) obtained by Shields from Bert Ottens in the golden years of Chinese mineral finds.

Herderite - Hydroxylherderite
stock #19.1-341
Conselheiro Pena, Doce Valley
Minas Gerais, Brazil
3.8 x 2.6 x 2.8 CM (miniature)
price: $220


An older specimen originally labelled as "Herderite" but without analysis it is more likely to be Hydroxylherderite. Either way this is a nicely crystalized Herderite series piece with 3 main crystals in a cluster, the largest being 2.6 CM. The crystals have glassy exteriors, are translucent and with strong backlighting show zoning with a darker orange core and lighter yellow exterior. Some minor contacts but no damage or bruises. Some thin cracks are seen in a few crystal faces these appear to be partly recrystallized under d magnification. There are no repairs, the specimen is solid and stable.

SOLD Pyrolusite with Manganite -well crystallized
stock #SOLD 20.1-281
Negaunee, Marquette Co.
Michigan, United States
10.5 x 6.8 x 5.1 CM (cabinet)
price: $0


Pyrolusite is not usually thought of as an esthetic mineral unless it is very well-crystallized. This piece has sprays and individual crystals to almost 5 CM long and has some free standing, cleanly terminated prisms. Excellent bright silver metallic luster, this is a very attractive version of a "black ugly" specie. An older classic US locale, this is a substantial piece not often seen in this esthetic quality.