Analcime and Natrolite crystals from the Kaulsberg Quarry, Ortenberg, Hesse, Germany – 1 unique flat
This flat with Analcime and Natrolite crystals from the Kaulsberg Quarry near Ortenberg in Hesse contains an extensive collection of characteristic zeolite mineralizations from this well known locality. The specimens display light colored Analcime and Natrolite formations within a dark volcanic matrix and provide an excellent impression of the typical material from this occurrence.
Analcime and Natrolite are among the best known zeolite minerals and are highly appreciated by collectors for their attractive crystal habits and interesting geological origin. This flat offers a good overview of the different appearances of these minerals and represents a varied collection of reference specimens from a classic German zeolite locality.
Geology & Origin
The Kaulsberg Quarry near Ortenberg is one of the well known zeolite localities in Hesse. The minerals formed within cavities of volcanic rocks when mineral rich solutions entered vesicles and fractures, allowing crystals to develop. Analcime commonly forms characteristic light colored crystal aggregates, while Natrolite is known for its fine to radiating crystal growth. The locality has long been valued by collectors for its diverse zeolite mineralization.
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) |