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Badakhshan (Badakshan; Badahsan) Province, Afghanistan A very aesthetic arrangement of smokey quartz on muscovite matrix. 120.6 x 91.4 x 63.5 mm |
| © Joseph A. Freilich | Photo ID: 74136 View Count: 1307 |
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Darra-i-Pech (Darra-e-Pech) Pegmatite Field, Nangarhar (Ningarhar) Province, Afghanistan A very gemmy crystal from a location that is famous for its stunning Kunzites, Tourmalines & Beryls. Rarely are any of the more common pegmatite minerals (Quartz & Feldspar) offered for sale. specimen size = 8.5 x 2.5 x 2.5 cm. |
| © Russell G. Rizzo | Photo ID: 97724 View Count: 367 |
Quartz (Var: Smoky Quartz) : SiO2, Microcline : K[AlSi3O8], Albite : Na[AlSi3O8] | |
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Papachacra, Belen Department, Catamarca, Argentina The crystals have classic forms and they are very well grown and have very well defined faces and edges. They contrast with the matrix of Microcline on which white Albite has grown. Formación Papachacra, Catamarca, Argentina. Found in 1993 Specimen size: 9.8 x 7.2 x 3.4 cm Main crystal size: 5.8 x 2.7 cm Albite fluorescent short ... |
| © fabreminerals.com | Photo ID: 81389 View Count: 309 |
Quartz (Var: Smoky Quartz) : SiO2, Microcline : K[AlSi3O8] | |
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Papachacra, Belen Department, Catamarca, Argentina 9.1 x 4.9 x 3.2 cm. A row of sharp smoky quartz crystals on a curving bed of little euhedral crystals of microcline, from Argentina. Ex. Dave Stoudt Collection. |
| © Rob Lavinsky | Photo ID: 165287 View Count: 236 |
Quartz (Var: Smoky Quartz) : SiO2, Microcline : K[AlSi3O8], Albite : Na[AlSi3O8] | |
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Papachacra, Belen Department, Catamarca, Argentina 18.1 x 12.1 x 7.9 cm. Two large, tabular, 5-cm crystals of smoky quartz lie flat against the matrix of sharp, euhedral crystals of cream-colored microcline - with another quartz of the traditional prismatic form growing at their base. Pale greenish-gray albites are here and there. From a small private collection of long-collected Argentine ... |
| © Rob Lavinsky | Photo ID: 158746 View Count: 128 |
Quartz (Var: Smoky Quartz) : SiO2, Microcline : K[AlSi3O8] | |
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Papachacra, Belen Department, Catamarca, Argentina 5.4 x 4.8 x 2.6 cm. A sharp, 5.4 cm smoky quartz crystal aesthetically set amongst sharp, tan microcline crystals from recent finds in the Andes Mountains of Argentina. |
| © Rob Lavinsky | Photo ID: 227491 View Count: 79 |
Quartz (Var: Smoky Quartz) : SiO2, Feldspar Group | |
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Papachacra, Belen Department, Catamarca, Argentina 9.0 x 6.7 x 6.4 cm. A matrix of tan albite is the host for a magnificent smoky quartz crystal, 8.3 cm in length. The quartz is dark black, glassy and gemmy and has a central termination surrounded by parallel growth crystals, giving it a cityscape appearance. This is a textbook example of a fine, pristine, smoky quartz specimen. Rarely do you get ... |
| © Rob Lavinsky | Photo ID: 226200 View Count: 75 |
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Papachacra, Belen Department, Catamarca, Argentina 5.7 x 4.2 x 2.5 cm. A fine combination specimen from recent finds at Papachacra, Argentina. Four pristine, gemmy and lustrous smoky quartz crystals to 2.6 cm project upward from a sloping field of sharp, off-white microcline crystals. Pastel-blue albite crystals are richly sprinkled and epitactically grown on the microcline crystals. |
| © Rob Lavinsky | Photo ID: 221142 View Count: 63 |
Quartz (Var: Smoky Quartz) : SiO2, Albite (Var: Cleavelandite) : Na[AlSi3O8] | |
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Papachacra, Belen Department, Catamarca, Argentina 6.8 x 5.6 x 3.0 cm. A 3.3 cm, striated, glassy and lustrous smoky quartz crystal is set on a plate of pearlescent, parallel-growth bands of echelon cleavelandite blades from recent finds in the Andes Mountains of Argentina. |
| © Rob Lavinsky | Photo ID: 233130 View Count: 62 |
Quartz (Var: Smoky Quartz) : SiO2 | |
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Papachacra, Belen Department, Catamarca, Argentina 8.8 x 2.5 x 2.0 cm. The unusual characteristic of this light smoky, glassy and gemmy, quartz specimen is that certain faces exhibit preferential etching, especially the larger 8.5 cm-tall crystal. The etching is most obvious near the termination of the larger crystal. Light, pleasing color and very gemmy. |
| © Rob Lavinsky | Photo ID: 226201 View Count: 57 |
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