Stilbite xls, Heulandite xls; Herbornseelbach Quarry, Lahn Dill Area, Germany; Min; unique piece
Stilbite and Heulandite crystals from the Herbornseelbach Quarry, Lahn Dill Area, Germany – miniature specimen as unique piece
This attractive collector specimen from the Herbornseelbach quarry features a rich association of Stilbite and Heulandite. The cavities of the specimen are lined with numerous well visible crystals that create a lively and highly detailed surface. Particularly striking are the pale to slightly yellow crystal aggregates, which stand out beautifully against the matrix. Crystals are clearly developed and provide an appealing combination of transparency, luster, and crystal form.
Geology & Origin
Stilbite and Heulandite belong to the zeolite group and typically form in cavities within volcanic or hydrothermally altered rocks. The Lahn-Dill district is one of Germany’s classic localities for zeolite minerals. The Herbornseelbach quarry is well known among collectors for its diverse zeolite assemblages, where numerous crystal forms developed within fractures and cavities. The combination of Stilbite and Heulandite is an excellent example of mineral growth processes within such environments and makes specimens like this highly desirable collector pieces.
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) | embedded 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) | 0.080000 |
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