Mineral Specimens with Calcite

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CKTSR-14 - ETTRINGITE on CALCITE - SOLD
N'Chwaning II Mine, Kalahari Manganese Fields, Northern Cape Province, South Africa
miniature, 5.5 x 3.5 x 2.5 cm

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ETTRINGITE on CALCITE from N'Chwaning II Mine, Kalahari Manganese Fields, Northern Cape Province, South Africa [db_pics/pics/cktsr-14a.jpg]

ETTRINGITE on CALCITE from N'Chwaning II Mine, Kalahari Manganese Fields, Northern Cape Province, South Africa [db_pics/pics/cktsr-14a.jpg]

A beautiful piece with the most intense lemon yellow hue! This specimen has several large scaleohedral calcites completely draped on one side by lemon yellow ettringite druse. It is just COLOR. The very tippy-tips are cleaved slightly, but it does not detract from the show value of the specimen at all since it is not readily noticeable.

CKTSR-16 - HEMATITE (twinned) with CALCITE - SOLD
Wessels Mine, Kalahari Manganese Fields, Northern Cape Province, South Africa
miniature, 4.5 x 3 x 3 cm

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HEMATITE (twinned) with CALCITE from Wessels Mine, Kalahari Manganese Fields, Northern Cape Province, South Africa [db_pics/pics/cktsr-16a.jpg]

HEMATITE (twinned) with CALCITE from Wessels Mine, Kalahari Manganese Fields, Northern Cape Province, South Africa [db_pics/pics/cktsr-16a.jpg]

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HEMATITE (twinned) with CALCITE from Wessels Mine, Kalahari Manganese Fields, Northern Cape Province, South Africa [db_pics/pics/cktsr-16b.jpg]

HEMATITE (twinned) with CALCITE from Wessels Mine, Kalahari Manganese Fields, Northern Cape Province, South Africa [db_pics/pics/cktsr-16b.jpg]

In the entire collection, this is perhaps my favorite miniature specimen, in terms of beauty and competition-level worthiness. It features a twinned, mirror-bright, 3 x 3 x 2.75 cm crystal on matrix, with accents of calcite. It displays magnificently vertically as shown or horizontally as well. Totally pristine and complete all around save for a small natural contact on one edge of the lower-rear, this is as close to a "jewel" as you can ever ask for a "black" mineral species! It HAS TO BE among the finest imagineable hematite miniatures, but more than that its a damned good miniature, period.

CKTSR-34 - TINZENITE on CALCITE - SOLD
Wessels Mine, Kalahari Manganese Fields, Northern Cape Province, South Africa
miniature, 4.5 x 3.5 x 3 cm

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TINZENITE on CALCITE from Wessels Mine, Kalahari Manganese Fields, Northern Cape Province, South Africa [db_pics/pics/cktsr-34a.jpg]

TINZENITE on CALCITE from Wessels Mine, Kalahari Manganese Fields, Northern Cape Province, South Africa [db_pics/pics/cktsr-34a.jpg]

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TINZENITE on CALCITE from Wessels Mine, Kalahari Manganese Fields, Northern Cape Province, South Africa [db_pics/pics/cktsr-34b.jpg]

TINZENITE on CALCITE from Wessels Mine, Kalahari Manganese Fields, Northern Cape Province, South Africa [db_pics/pics/cktsr-34b.jpg]

Charlie says this is by 2 orders of magnitude the best of species, and I believe him (as do others I have run this by). This piece, to me, is one of the most shocking surprises of the collection in that i had never even heard of the species coming from SA, and yet here is world's best...and beautiful full miniature to boot?! These crystals have the color of the best serandite, and lustre like glass. They reach 1.5 cm in size. Overall, its an extraordinarily beautiful specimen that is also of mineralogical significance.

CKTSR-35 - ETTRINGITE with HEMATITE and GAUDEFROYITE on CALCITE - SOLD
N'Chwaning II Mine, Kalahari Manganese Fields, Northern Cape Province, South Africa
cabinet, 10 x 8 x 4 cm

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Incredible , gorgeous combination specimen featuring two large ettringite crystals of lemon yello whue, perched on sparkling and contrasting CRYSTALLIZED white calcite AND Gaudefroyite, further accented by a hematite crystal atop. The hematite is striking, and is 2.25 cm long and doubly terminated, pseudo-scalenohedral in form. The ettringite crystals are to 4.5 cm in length and shimmer with electric sheen on the surface, and have deep color that does not convey well in the photos. The overall contrast is striking. This is a very rare, large example of the species in super aesthetic form. It was found in the mid to late 1980s. Comes with custom lucite display base.

CKTSR-5 - CALCITE (TWINNED) - SOLD
Wessels Mine, Kalahari Manganese Fields, Northern Cape Province, South Africa
miniature, 5.5 x 5 x 3 cm

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Sharp, really amazing twinning displayed with unique aesthetics! The 4 cm twinned crystal is perched up on two rhomds, each showing raised and unusual faces but themselves not twinned. Stunning, in person! And, complete all around, 360.

CKTSR-7 - KUTNAHORITE ON MANGANOCALCITE PS. CALCITE TWIN - SOLD
Wessels Mine, Kalahari Manganese Fields, Northern Cape Province, South Africa
miniature, 4 x 3 x 2 cm

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KUTNAHORITE ON MANGANOCALCITE PS. CALCITE TWIN from Wessels Mine, Kalahari Manganese Fields, Northern Cape Province, South Africa [db_pics/pics/cktsr-7a.jpg]

KUTNAHORITE ON MANGANOCALCITE PS. CALCITE TWIN from Wessels Mine, Kalahari Manganese Fields, Northern Cape Province, South Africa [db_pics/pics/cktsr-7a.jpg]

A complex specimen featuring sheaves of kutnahorite perched upon a twinned calcite crystal that has been completely replaced by manganoan calcite.... FLOATER! Unique, in my experience, for this particular combinaiton of qualities

CKTSU-28 - Calcite with Hematite inclusion - $ 750
Tsumeb Mine, Tsumeb, Namibia
miniature, 4.7 x 4.3 x 2.1 cm

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Calcite with Hematite inclusion from Tsumeb Mine, Tsumeb, Namibia [db_pics/pics/cktsu-28a.jpg]

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Calcite with Hematite inclusion from Tsumeb Mine, Tsumeb, Namibia [db_pics/pics/cktsu-28b.jpg]

This is a superb miniature of rounded, colorless, calcite rhombs with bright orange hematite inclusions which don�t quite reach the terminations, giving the crystals vivid color zoning highlighted by the transparent edges thus. The crystals are lustrous, translucent, and reach 2.5 cm across. A super fine Tsumeb calcite of a rare habit!

CKTSU-45 - Calcite with Mottramite - SOLD
Tsumeb Mine, Tsumeb, Namibia
small cabinet, 8.8 x 7.3 x 4.3 cm

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A stunnign specimen in person, the pics here do not do it justice! Colorless, glassy and gemmy rhombs of calcite, to 3 cm across, are partially covered by velvety, rich green mottramite. The mottramite hangs like drapery down the calcite cluster and in person looks much more "lively" (for lack of a better word), than the flat green smear it looks like in the photos here. The color contrast is wonderful as is the quality of the specimen overall. This is the classic Tsyumeb calcite style, but so interesting overall, it really jumps out in person.

CKTSU-52 - Calcite with Hematite inclusions - SOLD
Tsumeb Mine, Tsumeb, Namibia
cabinet, 10.2 x 6.7 x 5.6 cm

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Colorless rhombs of gemmy and glassy calcite to 3.0 cm across have received a preferential, thick dusting of reddish-brown, lustrous hematite, presenting a deep red color when all those faces angle forward. Underneath, from teh side, you can look into the crystals through thte clear colorless windows of the rhombohedral faces. The color contrast is superb and the sculptural form of the piece, very 3-dimensional, is also nice. There is only very minor wear (a few small rubs) and contacting on the massive matrix of the right side periphery, that keep this from being priced far higher for the overall size and display quality here.

CKTSU-64 - Calcite with Hematite inclusions - SOLD
Tsumeb mine, Tsumeb, Namibia
small cabinet, 9 x 9 x 4.3 cm

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Calcite with Hematite inclusions from Tsumeb mine, Tsumeb, Namibia [db_pics/pics/cktsu-64a.jpg]

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Calcite with Hematite inclusions from Tsumeb mine, Tsumeb, Namibia [db_pics/pics/cktsu-64b.jpg]

SHARP, incredibly deep red crystals that are thoroughly infused with microscopic hematite grains, giving them a deep ruddy red color. The piece is pristine and complete 360-degrees except a few very miniscule little nicks. This is a CLASSIC style for Tsumeb. However, large specimens in this condition are very rare.

CLT1 - Calcite on Calcite stalactite - SOLD
Near Guilin, Guangxi Province, China
large cabinet, 29.2 x 3.9 x 2.1 cm

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CLT2 - Calcite on Calcite stalactite - SOLD
Near Guilin, Guangxi Province, China
miniature, 4.8 x 2.5 x 2.3 cm

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Calcite on Calcite stalactite from Near Guilin, Guangxi Province, China [db_pics/pics/clt2a.jpg]

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Calcite on Calcite stalactite from Near Guilin, Guangxi Province, China [db_pics/pics/clt2b.jpg]

CLT5 - Calcite on Calcite stalactite - SOLD
Near Guilin, Guangxi Province, China
cabinet, 11.5 x 10 x 4 cm

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CMI18 - Quartz replacing Calcite, on Quartz stalactite with Fluorite - SOLD
Mahodari, Nasik, Maharashtra, India
cabinet, 12.7 x 5.2 x 4.8 cm

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This is a really unusual specimen. A crystal of calcite is perched atop, or impaled by, a stalactite of colorless quartz upon which, are several small lemony-yellow botryoidal fluorite spheres. Encrusted around the calcite core atop the pedestal are rhombs of calcite, to 3 cm across. As some of the calcite seems to hav ealtered to quartz at the surface, it appears that there has been at least, partial replacement(pseudomorphism) of the whole specimen by a later generation of quartz. UNUSUAL! this piece is pristine and complete all around, too

CMI2 - Calcite and Cavansite on Stilbite - SOLD
Wagholi Quarry, nr. Poona, Maharashtra, India
cabinet, 15 x 12.3 x 9.2 cm

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This specimen is simply a great combo piece! Calcite is VERY rare from this quarry, and seldom associated with cavansite even when found. This piece shows off a huge, pseudo cubic, golden-colored, calcite crystal with a wonderful and sparkly luster, perched on a contrasting stilbite matrix. Above and to the right of the calcite is an aesthetic cluster of deep royal blue cavansite, which emits a bright luster. The overall specimen has a wonderful sculptural feel. The calcite crystal, which measures 6 cm across, also has the additional perks of darker edges and, internally, one can see a rainbow effect come out in good lighting. The main cavansite group is 3cm across. The color contrasts in this piece are spectacular! The combination is rare. And the association is aesthetically made...just a very unique piece, overall!

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Rob Lavinsky, rob@irocks.com

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