Gersdorffite crystals from Heimberg, Harz, Germany – small cabinet specimen as unique piece
This attractive cabinet specimen from the Harz Mountains displays numerous dark grey to steel grey Gersdorffite crystals on a richly crystallized matrix. The surface is densely covered with small but clearly developed crystals that give the specimen an appealing metallic luster. Particularly attractive are the contrasting light colored associated minerals, which highlight the darker crystal aggregates. Crystals are visible across much of the display surface and provide the specimen with strong collector appeal.
Geology & Origin
Gersdorffite is a nickel arsenic sulfide with the chemical formula NiAsS and is one of the classic ore minerals of hydrothermal deposits. The Heimberg locality in the Harz Mountains belongs to Germany's historic mining districts and is known for a variety of arsenide, sulfide and ore minerals. Gersdorffite typically forms in hydrothermal veins, often associated with nickel ores, cobalt minerals and other sulfides. Well crystallized specimens from German localities are comparatively uncommon and make an interesting addition to systematic mineral collections.
Legal Notice
This mineral contains arsenic compounds. Avoid direct skin contact, do not inhale any dust produced, and keep the material out of reach of children. Not suitable for use in water or as a healing stone. Intended for collection and display purposes only.
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
