Pharmacolite xls; Wilhelm Mine, Nentershausen, Germany; Gerd Tremmel collection; Min; unique piece
Pharmacolite crystals from the Wilhelm Mine, Nentershausen, Germany Gerd Tremmel collection – miniature specimen as unique piece
This miniature specimen shows Pharmacolite crystals from the Wilhelm Mine, Nentershausen, Germany, from the Gerd Tremmel collection. Delicate pink to salmon colored Pharmacolite crystals occur on a light gray to slightly greenish matrix in tufted, fibrous aggregates. The crystals form small hemispherical groups with a silky luster and fine radial structure. In some areas, more intensely carmine red zones appear and create subtle color accents. The combination of compact matrix and softly developed crystal aggregates gives the specimen a balanced and structured appearance.
Geology & Origin
The Wilhelm Mine near Nentershausen belongs to the classic ore district of the Richelsdorf Mountains, known for its arsenic bearing mineral assemblages. Pharmacolite forms here as a secondary calcium arsenate in the oxidation zone of primary arsenic rich ores. Under oxidizing conditions, arsenic bearing solutions reacted with calcium containing components of the host rock and led to the precipitation of the characteristic fibrous crystal aggregates. The locality is one of the important German occurrences of this mineral and documents the complex geochemical processes within the weathering zone.
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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