Boussingaultite xls, Cronstedtite; Gernrode, Harz, Germany; Scab; unique piece
Boussingaultite crystals and Cronstedtite from Gernrode, Harz, Germany – small cabinet specimen as unique piece
This small cabinet specimen shows Boussingaultite crystals together with Cronstedtite from Gernrode, Harz, Germany. The piece is characterized by a fine grained to crusty surface with light, partly whitish to slightly pink areas contrasting with the darker matrix.
The Boussingaultite crystals form fine granular to slightly crystalline coatings, while the Cronstedtite appears more massive to finely aggregated. Well developed individual crystals are not visible, but the crystalline nature is evident through the texture and subtle luster.
Geology & Origin
Boussingaultite is a rare hydrated ammonium iron sulfate that typically forms in the oxidation zone of sulfide rich deposits. Cronstedtite is an iron rich phyllosilicate of the serpentine group and usually forms under hydrothermal conditions or through alteration of iron bearing minerals.
The Harz region, especially around Gernrode, is well known for its diverse mineral occurrences and historic mining activity, which has produced a wide variety of rare mineral formations.
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) | 0.100000 |
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