Erythrite xls; Bou Azzer, Morocco; Gerd Tremmel collection; Scab; unique piece
Erythrite crystals from Bou Azzer, Morocco, Gerd Tremmel collection – small cabinet specimen as unique piece
Erythrite crystals on this cabinet specimen occur as striking pink to deep carmine-red, acicular crystals concentrated within a cavity of the dark matrix. The crystals display a clearly radiating, fan-like arrangement and stand out vividly against the surrounding rock. Individual crystal faces are well visible, even though some needles are intergrown. The crystalline nature is distinct and typical of fine Erythrite specimens from Bou Azzer.
Geology & Origin
Erythrite is a secondary cobalt arsenate that forms in the oxidation zones of cobalt-rich ore deposits. The Bou Azzer mining district in Morocco is one of the classic and most important localities worldwide for Erythrite. There, the crystals typically develop in fractures and cavities of arsenic- and cobalt-bearing rocks and are often associated with other secondary minerals.
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
| shipment-weight, NOT netto weight (kg) | 0.100000 |
|---|