Gilalite crystals from the Christmas Mine, Arizona, USA, Gerd Tremmel Collection– miniature specimen as unique piece
This miniature specimen features numerous light green Gilalite crystals on brown matrix. The crystals occur in fine, granular to small crystalline aggregates and, together with colorless to slightly lustrous associated crystals, create a lively and detailed surface. The crystals are clearly recognizable and provide a fresh contrast between the green mineralization and the earthy host rock.
Particularly attractive is the even distribution of crystals across large parts of the surface. The combination of delicate green tones and fine crystalline texture gives this miniature specimen both aesthetic appeal and mineralogical significance.
Geology & Origin
Gilalite is a rare copper-iron tellurite forming in the oxidation zone of copper-rich deposits. The Christmas Mine in Arizona is a classic locality for secondary copper minerals formed through the weathering of primary ores. Within these oxidation zones, rare tellurium- and copper-bearing minerals such as Gilalite crystallize in fine, typically small-scale aggregates on the host matrix.
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
