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Heulandite-Ca : (Ca,Na)2-3Al3(Al,Si)2Si13O36·12H2O | |
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Nasik District, Maharashtra, India Pink crystals of heulandite up to 6 mm on basaltic matrix. Photo and collection Antonio Borrelli. |
| © Antonio Borrelli | Photo ID: 36622 View Count: 369 |
Heulandite-Ca : (Ca,Na)2-3Al3(Al,Si)2Si13O36·12H2O, Celadonite : K(Mg,Fe2+)(Fe3+,Al)[(OH)2|Si4O10] | |
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Nasik District, Maharashtra, India 6.2 x 3.8 x 3.5 cm. A superb complex bowtie of Huelandite with Caledonite that gives the amazing impression of being quadruple-terminated. 6.2 cm long. Ex. Charlie Key. |
| © Rob Lavinsky | Photo ID: 201323 View Count: 62 |
Heulandite-Ca : (Ca,Na)2-3Al3(Al,Si)2Si13O36·12H2O, Chalcedony | |
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Nasik District, Maharashtra, India 9.4 x 6.9 x 4.2 cm. A visually dramatic piece featuring a 4 cm salmon/red-colored Heulandite that has great luster and superb gemminess for the species. The color is unusually intense. The large Heulandite rests in a forest of very fine Chalcedony "straws," which helps create the incredible aesthetics of the piece. The several smaller Heulandites ... |
| © Rob Lavinsky | Photo ID: 254443 View Count: 16 |
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Nasik District, Maharashtra, India 7 x 4.6 x 4 cm. A very fine set of three Celadonite-included Heulandites on matrix from the Nasik District in India. The curved crystals are very attractive and have good luster, but what sets them apart is the deep forest-green color, which is well above average. The largest of the crystals in nearly 4 cm tip to tip. Ex. Charlie Key Collection. |
| © Rob Lavinsky | Photo ID: 244335 View Count: 15 |
Heulandite-Ca : (Ca,Na)2-3Al3(Al,Si)2Si13O36·12H2O, Celadonite : K(Mg,Fe2+)(Fe3+,Al)[(OH)2|Si4O10] | |
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Nasik District, Maharashtra, India 4.5 x 3.1 x 2.6 cm. A fine combination of five well-formed and lustrous Heulandite with Celadonite crystals growing in an amazingly sculptural cluster. The largest is about 2.9 cm in length. Ex. Charlie Key Collection. |
| © Rob Lavinsky | Photo ID: 240524 View Count: 14 |
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