Gypsum xls ("Swallowtail Twins"); Borken, Hesse, Germany; unique piece
Gypsum Crystals in Swallowtail Twin Formation from Borken, Hesse, Germany – Unique Specimen
This natural Gypsum specimen displays the characteristic twinned crystal growth known as swallowtail twins. Depending on the specimen, the crystals range from colorless to white or slightly beige and exhibit a silky to vitreous luster. The distinctive twin formation gives each unique specimen its own individual appearance and makes this one of the most recognizable crystal habits of Gypsum.
Geology & Origin
Gypsum is a widespread sulfate mineral that forms through the evaporation of mineral-rich waters in evaporite deposits. The deposits near Borken in Hesse, Germany, are known for producing well-developed Gypsum crystals, including the classic swallowtail twins. These characteristic twins form through the intergrowth of two crystals during crystal growth and are regarded as one of the most typical crystal habits of Gypsum.
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) | 0.500000 |
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