Calcite - Mineral specimens search results

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Mineral specimens search results for [ Calcite ]

Although Calcite is a common species, that does not always hold true globally. This is a novelty for Madagascar since its discovery in August 2004, an aggregate that highlights the sharpness of its crystals, their color and luster and, especially, the appearance of extraordinarily unusual twins formed by the interpenetration of two rhombohedra.
Basalt Quarry, Ambariomiambana, Sambava District, Sava Region Madagascar (08/2004)
Specimen size: 5.2 × 3.3 × 2.3 cm = 2.05”
Price: [SOLD]

TMG97AN3: Twinned Calcite

A 'butterfly' twin of two very sharp Calcite crystals, with geometric bands of different intensities of red color due to Hematite inclusions. Interestingly similar to the classic English twinned Calcites from the Bigrigg area. The specimen is from the Alain Martaud collection.
Vaiges, Meslay-du-Maine, Mayenne, Mayenne Department, Pays de la Loire France
Specimen size: 7.4 × 7.1 × 2.4 cm = 2.91” × 2.80” × 0.94”
Price: [SOLD]

AM47Z0: Twinned Calcite

Aggregate of twinned and complex Calcite crystals with the clearly dominant scalenohedron. They are transparent, bright and come from a Portuguese locality from which usually are not many samples.
Cantera Vale Rodrigues, Moita do Poço, Turquel, Alcobaça, Leiria Portugal (2009)
Specimen size: 10.6 × 8.2 × 4.8 cm = 4.17” × 3.23” × 1.89”
Price: [SOLD]

SG28AB6: Twinned Calcite

Very Sharp butterfly Calcite twin, transparent, bright with oriented red Hematite micro-inclusions. An excellent English classic. As is the case with so many specimens in this collection, the sample is of great quality for the locality.
Egremont, West Cumberland Iron Field, former Cumberland, Cumbria England / United Kingdom
Specimen size: 4.9 × 4.2 × 2.1 cm = 1.93” × 1.65” × 0.83”

Main crystal size: 3.6 × 2.9 cm = 1.42” × 1.14”
Price: [SOLD]

ET27AA4: Twinned Calcite

Aggregate of lenticular Calcite crystals, the largest with the prism faces more developed. The crystals are translucent, their color is between yellow and orange and they have a gray color zoning. As in so many specimens in this collection, the sample is of great quality for the locality.
La Sambre Quarry, Landelies, Montigny-le-Tilleul, Hainaut Province, Wallonia Region Belgium
Specimen size: 7.4 × 5.7 × 3.1 cm = 2.91” × 2.24” × 1.22”
Price: [SOLD]

N7CH5: Twinned Calcite

The crystal is transparent, doubly terminated and it is on matrix. Faces and edges are very sharp and clearly show two twinned scalenohedra. A curiosity from a mine very famous for its Fluorites.
Coroña Shaft, Josefa-Veneros Norte vein, La Collada mining area, zona minera de La Collada, Siero, Comarca Oviedo, Principality of Asturias (Asturias) Spain (1980)
Specimen size: 4.9 × 4.3 × 1.8 cm = 1.93” × 1.69” × 0.71”

Main crystal size: 2.2 × 1 cm = 0.87” × 0.39”
Price: [SOLD]

N12XBH5: Twinned Calcite

The sample is especially esthetic. It has doubly terminated yellowish crystals of a considerable size. Faces and edges are very defined and clearly show the interpenetration of two rhombohedra. A curiosity from a mine very famous for its Fluorites.
Coroña Shaft, Josefa-Veneros Norte vein, La Collada mining area, zona minera de La Collada, Siero, Comarca Oviedo, Principality of Asturias (Asturias) Spain (1980)
Specimen size: 14 × 8.5 × 6.5 cm = 5.51” × 3.35” × 2.56”
Price: [SOLD]

TA56G1: Twinned Calcite

Fine specimen of the discovery in August 2004, in Madagascar, with the typical complex twin and excellent color, bright and clarity.
Sambava, Antsiranana Madagascar (08/2004)
Specimen size: 4.3 × 4 × 3.5 cm = 1.69” × 1.57” × 1.38”
Price: [SOLD]

TB27G9: Twinned Calcite

A group of slightly flattened crystals that have a very uncommon type of twinning. They are on a matrix of little Quartz crystals. With the Calcite, some white prismatic crystals of Laumontite have also grown.
Sambava, Antsiranana Madagascar (08/2004)
Specimen size: 6.5 × 4.5 × 4 cm = 2.56” × 1.77” × 1.57”
Price: [SOLD]

TC67J3: Twinned Calcite

Group of crystals from the August 2004, find. The aggregate is very attractive and we note the clearness of the crystals, the color and luster and, especially, the existence of twins formed by the contact of two rhombohedrons.
Basalt Quarry, Ambariomiambana, Sambava District, Sava Region Madagascar (08/2004)
Specimen size: 6.7 × 4 × 3.7 cm = 2.64” × 1.57” × 1.46”

Main crystal size: 4.5 × 3 cm = 1.77” × 1.18”
Price: €240 / US$255 / ¥39150 / AUD$390

TE56L0: Twinned Calcite

An interesting novelty of Tucson 2008. A nice twin of two short Calcite crystals. Prism faces are totally clear and transparent. Pinacoidal terminations are translucent. To increase its beauty the specimen has a small matrix. Excellent miniature.
Wuzhou Prefecture, Guangxi Zhuang Autonomous Region China (10/2007)
Specimen size: 2.8 × 2.7 × 2.2 cm = 1.10” × 1.06” × 0.87”
Price: [SOLD]

TB62AG9: Twinned Calcite with Calcite, Palygorskite and manganese oxides

A novelty at Tucson 2017. Thick lenticular Calcite crystals with very well defined faces and edges. They are translucent with parallel growths and an easily visible interpenetration twin. They have grown around acute scalenohedral crystals of a first Calcite generation that are coated by Palygorskite. The related black material are manganese oxides.
Palmarejo Mine, Palmarejo, Municipio Chinipas, Chihuahua Mexico (10/2016)
Specimen size: 18.3 × 10.7 × 10 cm = 7.20” × 4.21” × 3.94”

Main crystal size: 6.5 × 4.8 cm = 2.56” × 1.89”
Price: [SOLD]

612 results found.

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