Heulandite, Apophyllite xls; Pune, India; Gerd Tremmel collection; Cab; unique piece
Heulandite and Apophyllite crystals from Pune, India, Gerd Tremmel collection – cabinet specimen as unique piece
This cabinet specimen features Heulandite and Apophyllite crystals from Pune, India, originating from the Gerd Tremmel collection. The visually striking contrast between the bright, glassy Apophyllite crystals and the dark reddish-brown Heulandite crystals creates a well-balanced and highly aesthetic appearance. The Apophyllite crystals are partly free-standing on the pale bluish matrix, while the Heulandite occurs in characteristic layered aggregates, adding structural depth and visual complexity. The specimen dates from before 1993 and represents classic material from one of the world’s most important zeolite localities.
Geology & Origin
The Pune region in the Indian state of Maharashtra is internationally renowned for its exceptional zeolite assemblages formed within cavities of basaltic lava flows. Heulandite and Apophyllite crystallized from low-temperature hydrothermal fluids after the basalts had solidified. The association of these two minerals on a single specimen is typical for this locality. Historic specimens from collections such as that of Gerd Tremmel also carry documentary value, as many of the classic collecting sites are no longer accessible today.
This table is for general information and orientation, although the sizes of the stones may vary. In addition, this specification is handled differently from region to region.
| Sizes | Description | approx. Sizes in mm/cm | approx. Sizes in INCH | |
| Capsule | Capsule | 0.1–0.5 mm in a transparent hard capsule (approx. 1 cm) | capsule contents 0.1–0.5 mm | capsule contents 0.004–0.02 in |
| TN/mm | Micromount (TN = Thumbnail) | everything fitting in a TN Perky box or a MM box of approx. 1 in | approx. 0.5–2.5 cm | max. 1 in |
| Min | Miniature specimen | will not fit a TN or MM box anymore | approx. 2.5–5 cm | approx. 0.2–1.0 in |
| Scab | small cabinet specimen | approx. one-third to half a hand size | approx. 5–9 cm | approx. 1.0–2.0 in |
| Cab | cabinet specimen | full hand size | approx. 9–15 cm | approx. 2.0–3.5 in |
| large Cab | large cabinet specimen | approx. two hand sizes | approx. 15–30 cm | approx. 3.5–6.0 in |
| very large Cab | very large cabinet specimen | everything larger, no upper limit |
Abbreviations commonly used in mineralogy.
| Abbreviation | Meaning |
| xl | single crystal, possible with matrix |
| xls | noticeable crystals |
| (xl) | embedded or damaged |
| (xls) | embeddet or damaged |
| MASS | massive and/or amorphous pieces |
| TYP | type locality of the original description |
| SWUV | shortwave-UV-reaction |
| UV | ultraviolet reaction |
| SC | self-collected |
| U | unique (single unique piece) |
Usage Instructions
This product is ideal as a collector's item, decorative element, teaching material, or for scientific and exhibition purposes.
Legal Notices
Safety
We accept no liability for damages resulting from improper and/or non-recommended use. Please carefully assess the suitability of the product before any alternative use.
Responsible Provider
Mikon Mineralienkontor GmbH
Steinslieth 11
D-37130 Gleichen OT Klein Lengden
Email: info@mikon-online.com
| shipment-weight, NOT netto weight (kg) | 0.500000 |
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