Helvine, Quartz xls; Huifong, Guangdong, China; Gerd Tremmel collection; Scab; unique piece
Helvine and Quartz crystals from Huifong, Guangdong, China, Gerd Tremmel collection – small cabinet specimen as unique piece
This cabinet specimen features Helvine and Quartz crystals from Huifong, Guangdong, China, originating from the Gerd Tremmel collection. The light-colored, prismatic Quartz crystals form a dense, upright cluster with well-developed crystal faces and a partially glassy luster. Small, dark Helvine crystals are intergrown among the Quartz crystals, adding mineralogical contrast and clear collector appeal. The balanced crystal arrangement creates a stable and visually pleasing overall appearance. The specimen dates from before 2002 and represents classic collector material from a locality that is now only limitedly accessible.
Geology & Origin
The Huifong area in Guangdong Province, China, is known for pegmatitic and hydrothermal mineral formations. Quartz crystallized from silica-rich fluids within open cavities, while Helvine, a rare beryllium-manganese silicate, formed under specific geochemical conditions. The association of both minerals as crystals is characteristic for this locality and is especially valued in older collection specimens, as comparable material has become increasingly scarce today.
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 |
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