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Mineral Specimens with Calcite
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7.2 x 6.2 x 5.5 cm. A beautiful, gemmy and lustrous, 6.8 cm, golden-amber calcite crystal aesthetically set in mounded galena matrix covered with small calcite crystals from the Sweetwater Mine of Missouri. The termination is extremely gemmy on this striking, very colorful calcite. Ex. George Feist Collection.
The cluster of tightly packed manganite crystals you see here is actually a thick layer of parallel crystals stood vertically, that wraps around the back and over the top of the matrix so that what you see from the display face is a quite attractive “crown” of manganite overarching the matrix. Somewhat of a rarity from Sweden, even if we see manganite from other localities, and this is a large and hefty specimen to boot. 9.5 x 9 x 5.5 cm
A bright, brilliant calcite with the classic hematitic inclusions that make these so desirable to collectors. These were found in the late 1800s and have long since been out of the ground. This is a very showy piece that is nearly perfect (with just a few small cleaves that do not detract visually). 4.8 x 3.5 x 2.8 cm
Exceptionally gemmy crystals to 4 cm across have grown on a matrix of light green calcite crystals! There is only the smallest bit of damage in the main display area; the rest is limited to the periphery (which all of these specimens have). Even with new mining going on, good Meikle pieces are still highly desirable. 10.2 x 6.4 x 5.5 cm
14.7 x 10.3 x 7.6 cm. This is a large specimen showing off sharp calcite crystals that have been completely replaced by fluorite. It is sparkly and pretty, and has rich hues of purples to hematite-stained reds. It is an impressive and an unusual pseudomorph. Weighs 880 grams.
6.3 x 5.4 x 4.4 cm. A striking and aesthetic Santa Eulalia pseudomorph specimen of sparkly, rust-brown smithsonite after sharp, dogtooth calcite crystals on a bit of gossan matrix. This superb piece is pristine and is beautifully constructed. This is an excellent example of the material. Ex. Consie Prince Collection.
11.8 x 10.4 x 4.9 cm. This is a fascinating cabinet pseudomorph specimen from a find in the Atlas Mountains of Morocco. Two interestingly shaped knobs of upright, parallel-growth, poker-chip crystals of calcite have been pseudomorphed by sparkling quartz. This is from the same find that included pseudomorphs of quartz after fluorite. I really like the sculptural aspects of this piece and the variable amounts of iron oxides tinting the pseudomorphs, especially on the edges. Ex. Elling Collection.
5 x 5 x 3.5 cm. A really sparkling and unusual replacement from this locality. I have seen many other smithsonite pseudomorphs of calcite from here over the years, all of them that I can recall a sort of dull brown or rusty color. This, however, from a new find, is sparkling as if covered by fine grains of sugar. the color in person is beige/tan. It is opaque. The 3-dimensionality is really nice, as the crystals sit atop a knoll of galena-rich rock matrix. From a small find of June 2009.
11.0 x 8.0 x 5.3 cm. A 4.0 cm, gemmy and lustrous, honey-colored calcite crystal aesthetically set on blue and purple fluorite cabinet matrix richly sprinkled with smaller calcite crystals from recent finds at the Shangbao Mine of China. The calcite crystal has stout, hexagonal form and this combination has been in much demand, since their discovery a couple of years ago.
11.0 x 9.7 x 3.6 cm. An impressive cabinet plate of lustrous, translucent and colorless hemimorphite blades to 2.5 cm from the less well-known Summit Mine of Montana. The hemimorphite blades have a rich, preferential coating of snow-white, globular calcite. The Summit Mine has produced some of the finest hemimorphite in the United States and this is a fine, highly representative, large specimen. From an old US collection.
13.0 x 11.0 x 2.6 cm. A fine, two-sided cabinet plate from the new Find at the N’Chwaning II Mine. Intergrown and isolated balls of very glassy and gemmy, rose-brown to tan, elongated orthorhombic crystals of olmiite are very nicely scattered on a super-sparkly crust of glassy calcite crystals. Some of the clusters look just like bowties and the largest cluster is 2.0 cm wide.
8.1 x 7.5 x 5.5 cm. A superb, classic and old-time calcite specimen from the historic Tri-State District. This lush, golden-amber specimen features two, intergrown, totally pristine, fat scalenohedrons. The color, lustre and translucency of these crystals are excellent. The sharp terminations are especially gemmy. Ex. Freedman, Carl Francis and George Feist Collections.
14.5 x 6.9 x 4.6 cm. This small new find of mounded clusters of green, lustrous and translucent calcite rhombs was a nice surprise from the locality that produces the super babingtonites. The green color is caused by inclusions of copper. This is a very fine, highly representative cabinet specimen from this find. Most unusual by worldwide calcite standards.
4.5 x 4.5 x 4.2 cm. A beautiful pair of gemmy, twinned Calcites, each in the shape of a triangular mainsail. The Calcites have excellent luster and the classic red fluorescence seen from Wessels Calcites. The largest crystal is 4 cm tall, and the pair sits on a matrix of white, crystallized Calcite. Both types of Calcites have some Hematite dusting, which adds attractive contrast to the crystals. Ex. Charlie Key stock.
6.4 x 4.6 x 3 cm. An attractive set of about fourteen light pink spherical clusters of translucent Manganoan Calcite. The crystals have a rich silky luster, and are aesthetically distributed on nicely contrasting Manganite matrix. The largest Calcite sphere is about 1.8 cm across, and the radial growth of flat-lying crystals along its sides give it an interesting ''bowtie'' look. Excellent fluorescence. Ex. Charlie Key stock.
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Rob Lavinsky, rob@irocks.com
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share specimen![Calcite, Galena from Sweetwater Mine (Milliken Mine; Frank R. Milliken; Blair Creek; Ozark Lead Company Mine; Adair Creek; Logan Creek), Ellington, Viburnum Trend District, Reynolds Co., Missouri, USA [db_pics/mdpics/MD-238965a.jpg]](db_pics/mdpics/MD-238965a.jpg)
![Manganite, Calcite from Bölet, Undenäs, Karlsborg, Västergötland, Sweden [db_pics/mdpics/MD-23901a.jpg]](db_pics/mdpics/MD-23901a.jpg)
![Calcite, Hematite from Egremont, West Cumberland Iron Field, North and Western Region (Cumberland), Cumbria, England, UK [db_pics/mdpics/MD-23910a.jpg]](db_pics/mdpics/MD-23910a.jpg)
![Baryte, Calcite from Meikle Mine, Bootstrap District, Elko Co., Nevada, USA [db_pics/mdpics/MD-23930a.jpg]](db_pics/mdpics/MD-23930a.jpg)
![Fluorite, Calcite from Santa Eulalia District, Mun. de Aquiles Serdán, Chihuahua, Mexico [db_pics/mdpics/MD-239856a.jpg]](db_pics/mdpics/MD-239856a.jpg)
![Smithsonite, Calcite from San Antonio Mine (San Antonio el Grande Mine), East Camp, Santa Eulalia District, Mun. de Aquiles Serdán, Chihuahua, Mexico [db_pics/mdpics/MD-239909a.jpg]](db_pics/mdpics/MD-239909a.jpg)
![Quartz, Calcite from Ourika Valley, High Atlas Mts, Atlas Mts, Morocco [db_pics/mdpics/MD-239930a.jpg]](db_pics/mdpics/MD-239930a.jpg)
![Smithsonite, Calcite from Santa Eulalia District, Mun. de Aquiles Serdán, Chihuahua, Mexico [db_pics/mdpics/MD-239942a.jpg]](db_pics/mdpics/MD-239942a.jpg)
![Calcite, Fluorite from Shangbao Pyrite mine, Leiyang Co., Hengyang Prefecture, Hunan Province, China [db_pics/mdpics/MD-240020a.jpg]](db_pics/mdpics/MD-240020a.jpg)
![Hemimorphite, Calcite from Summit Mine (Old Summit; Montana Silver Star), Radersburg District (Cedar Plains District; Lone Mountain District), Broadwater Co., Montana, USA [db_pics/mdpics/MD-240030a.jpg]](db_pics/mdpics/MD-240030a.jpg)
![Hemimorphite, Calcite from Summit Mine (Old Summit; Montana Silver Star), Radersburg District (Cedar Plains District; Lone Mountain District), Broadwater Co., Montana, USA [db_pics/mdpics/MD-240030b.jpg]](db_pics/mdpics/MD-240030b.jpg)
![Olmiite, Calcite from N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-240148a.jpg]](db_pics/mdpics/MD-240148a.jpg)
![Olmiite, Calcite from N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-240148b.jpg]](db_pics/mdpics/MD-240148b.jpg)
![Calcite from Joplin Field, Tri-State District, Jasper Co., Missouri, USA [db_pics/mdpics/MD-240155a.jpg]](db_pics/mdpics/MD-240155a.jpg)
![Calcite from Qiaojia, Qiaojia Co., Zhaotong Prefecture, Yunnan Province, China [db_pics/mdpics/MD-240157a.jpg]](db_pics/mdpics/MD-240157a.jpg)
![Calcite from Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-240242a.jpg]](db_pics/mdpics/MD-240242a.jpg)
![Calcite from Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-240242b.jpg]](db_pics/mdpics/MD-240242b.jpg)
![Calcite (Var: Manganoan Calcite), Manganite from Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-240256a.jpg]](db_pics/mdpics/MD-240256a.jpg)
![Calcite (Var: Manganoan Calcite), Manganite from Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-240256b.jpg]](db_pics/mdpics/MD-240256b.jpg)