home

minerals
new arrivals
browse list
search/filter

ordering

news

about

links

contact

 

 

catalog listings

search/filter
 

search
329 specimens listed
Page   ‹ Previous | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | Next › | ...

Sphalerite and Siderite - fine Cornish
stock #15.1-450
Ale and Cakes Mine, Gwennap
Cornwall, England
4.2 x 2.8 x 2.6 CM (miniature)
price: $800


Super lustrous black Sphalerite crystals on contrasting crystals of Siderite. This piece is from the noted Cornish collection of Lewis Barton (his label is included), and is a superb Sphalerite from anyplace in Cornwall and likely the best known from the Ale and Cakes Mine (which is a great name for a mine)! Despite a few edge nicks and contacts the overall quality and condition is really fine. A choice addition for any good Cornish or UK suite.

Fluorite
stock #AX-32-234
Cantera Llamas, Duyos, Caravia
Asturias, Spain
2.7 x 1.6 x 1.8 CM (thumbnail)
price: $160


Transparent violet Fluorite with an unusual edge modification that is only seen on two adjacent edges. A nice looking thumbnail with some light face frosting and no damage, this is a fine example for the habit and locality. Cubes with edge modifications are not very unusual BUT a cube with just one or two edges beveled is quite uncommon. There are no corner modifications either, simply some edges are cleanly beveled. Even without the odd crystallography this is a nice thumbnail.

Cornetite - crystallized, with minor Malachite
stock #20.1-142
L Etoile du Congo Mine (Star of the Congo), Lubumbashi
Haut-Katanga Province, Democratic Republic of Congo (Zaire)
10.8 x 6.3 x 5.2 CM (cabinet)
price: $330


A sparkling vivid blue specimen from the famed "sparkle pocket" found decades ago. The piece is well-mineralized on both sides but only one side has the rich lustrous sparkles. The specimen is sawn on one side and this cut is visible from most display angles. Despite that saw mark the specimen is a very rich example of what was perhaps the best find ever for the specie.

Hyalite Opal - Vintage specimen 1895
stock #20.1-296

San Luis Potosi, Mexico
9.6 x 8.4 x 5.4 CM (cabinet)
price: $330


This is both a nice specimen and a fine historic piece as well. The specimen has a slightly faded affixed label from the remarkable collection of Wallace Gould Levison. Details from his ledger (we include a photocopy of the page) says" Bought from William Niven in his new store at 14th street and Broadway (NYC) April 18, 1895". Niven was an important minerologist born in 1850 who was an early partner with the famed dealer George English, later an independent dealer in New York. The specimen is vividly fluorescent and the Hyalite Opal is perfectly transparent looking like bubbles covering a purplish Chalcedony matrix. The only location given in the notes is San Luis Potosi, this is almost certainly from Tepetate. A very choice piece that is both esthetic and a nice piece of History.

Fluorite - zoned with hollow Barite indentation
stock #15.1-027
Denton Mine, Harris Creek Sub District, Hardin County
Illinois, United States
5.8 x 5 x 3.4 CM (cabinet)
price: $390


Remarkable dark Fluorite crystals that have a bright yellow core that is only seen inside the holes left by former Barite rosettes. These Barite holes have a distinctive structure, these are a waxy cone shaped void that shows the detail of the long-gone Barite crystals. These Barite holes are well known from the region but the color zoning on this one is unusual and is especially impressive when backlit. The Fluorite is overall dark, sharp and lustrous with some edge scuffs, so perhaps not for strict perfectionists. The main interest is of course the Barite holes up to 1 CM across that penetrate the inner bright yellow center of the Fluorite. In Some light this looks like a dark purple but most of the color is really the exterior coating of Bitumen which is nearer to a black color.

Hematite with Quartz -unusual locality
stock #16.1-718
Dzhezkazgan Mining District
Karagandy Province, Kazakhstan
4.7 x 3.8 x 2.8 CM (miniature)
price: $340


Choice, mirror bright metallic crystals in a stacked cluster from an unusual locality in Kazakhstan. The main crystal is a perfect hexagon 2.2 CM across. This mine is well known for excellent Copper minerals but this is the first fine Hematite we have seen. The Karagandy region has other localities for nice Hematites but this is both different in habit and better than most we have seen.

Calcite on Adamite
stock #AX-11-280
Mina Ojuela, Mapimi
Durango, Mexico
5 x 4.2 x 2.3 CM (miniature)
price: $165


Sparkling reddish-pink Calcites encrust and contrast with green Adamite balls. Great luster and vivid color, this is hard to fully appreciate in photos but has really good display impact. Most of the Adamite is fully encased under the Calcite but it is seen clearly at some angles. Ojuela has produced many fine Adamites in many habits during a long history. This color combo is not so common, this miniature piece is in fine undamaged condition and would go well in a suite of choice Mexican minerals.

Milarite on Valencianite and Quartz
stock #AX-10-589
Valenciana Mine (Mina La Valenciana), Municipio de Guanajuato
Guanajuato, Mexico
7.8 x 5.8 x 5.4 CM (cabinet)
price: $160


One of the more uncommon Beryllium Silicate species, Milarite is a real "mineral collectors" specie. This piece is from the find some decades ago in Guanajuato, Mexico. The Matrix is a mix of Quartz and Valencianite (variety of Adularia). The Valencia Mine is the type locality for the Feldspar and was the source of these small bright yellow Milarites which were big news in the mineral world. This piece has several very small crystal and one a bit larger (about 8mm). These are flat habit and the structure is not as evident without good magnification. A fair example of the find that is not crazy expensive.