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Calcite : CaCO3 | |
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Naica, Mun. de Saucillo, Chihuahua, Mexico Large rhombic calcite crystals in aesthetic formation. Very clean, with minor quartz and fluorite. Overall size of mineral specimen: 7x6x5 cm. Size of individual crystals: 1-2.5 cm. |
| © 2001 John H. Betts | Photo ID: 1704 View Count: 1136 |
Calcite : CaCO3 | |
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Naica, Mun. de Saucillo, Chihuahua, Mexico Twinned rhombic crystals of white etched calcite 3-3.5 cm across with small pyrite crystals on surface. Ex. Swigert collection #1367. Overall size of mineral specimen: 7x5x4 cm. Size of individual crystals: 3-3.5 cm. |
| © 2000 John H. Betts | Photo ID: 158 View Count: 446 |
Calcite (Var: Manganoan Calcite) : (Ca,Mn)CO3, Gypsum (Var: Selenite) : Ca[SO4] · 2H2O | |
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Naica, Mun. de Saucillo, Chihuahua, Mexico A pretty “flower” of pastel pink manganocalcite (the manganese content tints it pink) accented by silky crystals of translucent selenite. 4.0 x 3.2 x 2.9 cm |
| © Rob Lavinsky | Photo ID: 34645 View Count: 298 |
Calcite : CaCO3, Galena : PbS, Pyrite : FeS2 | |
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Naica, Mun. de Saucillo, Chihuahua, Mexico The Calcite crystal has simple forms but has a completely recrystallized surface emphasizing the esthetic effect on matrix rich of Galena, Pyrite and Calcite. Specimen with pedigree, as labels of first supplier and collection of origin shows (they misidentified the species, which appears as Dolomite) Naica, Saucillo, Chihuahua ... |
| © fabreminerals.com | Photo ID: 62501 View Count: 185 |
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Naica, Mun. de Saucillo, Chihuahua, Mexico 9cm x 5cm x 6cm Beautiful blue blades of anhydrite are overgrown with white and clear calcite. |
| © Cory Boehne | Photo ID: 186389 View Count: 103 |
Calcite : CaCO3, Anhydrite : CaSO4 | |
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Naica, Mun. de Saucillo, Chihuahua, Mexico A neat combination piece featuring a grouping of very pale blue to colorless prismatic anhydrite crystals to 3 cm in length, these forming a 10.5 x 7 x 7.7 cm cluster. These anhydrite crystals are in turn scattered richly with small colorless translucent crystals of scalenohedral calcite to 5 mm in length. This is all sitting on a very thin ... |
| © Dan Weinrich | Photo ID: 119551 View Count: 101 |
Calcite (Var: Manganoan Calcite) : (Ca,Mn)CO3, Pyrite : FeS2 | |
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Naica, Mun. de Saucillo, Chihuahua, Mexico 26.5 x 24.8 x 14.3 cm. A monster calcite specimen out of the noted Miller Collection - a huge cluster of gorgeously sharp rhombs, with a faint pink blush from the manganese content. Pyrites and calcite microcrystals add variety to the surface of the rhombs. As you can see, the crystals flouresce a bright cherry red! The crystals measure to 5 cm in ... |
| © Rob Lavinsky | Photo ID: 114520 View Count: 97 |
Calcite : CaCO3, Sphalerite : (Zn,Fe2+)S | |
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Naica, Mun. de Saucillo, Chihuahua, Mexico 9.7 x 5.9 x 5.7 cm. A DRAMATIC old Naica specimen featuring two large, frosty intergrown crystals of calcite (to 5.5 cm tip-to-tip) beautifully accented by the flashy, dark sphalerites on the natural matrix base. The calcites are in pristine condition. |
| © Rob Lavinsky | Photo ID: 154691 View Count: 63 |
Calcite : CaCO3 | |
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Naica, Mun. de Saucillo, Chihuahua, Mexico 2.6 x 2.1 x 1.8 cm. A classic Calcite thumbnail specimen from about 25 years ago. It features an intergrown pair of very light pink color textbook rhombohedra of Calcite associated with a small amount of accenting golden Pyrite. |
| © Rob Lavinsky | Photo ID: 176713 View Count: 53 |
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Naica, Mun. de Saucillo, Chihuahua, Mexico A 3 x 2/12 inch rhomb of calcite has had a band of pyrite deposited around it and later dissolved away leaving a "cast" of the original crystal. Later deposition calcite of a different habit has been deposited on the pyrite "rind" almost covering it. This one is in the Creekmur collection. |
| © Charles Creekmur | Photo ID: 233990 View Count: 47 |
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