Rosterite (Tourmaline) crystals from the Childs Aldwinkle Mine, Arizona, USA – 1 unique flat
This half size flat with Rosterite (Tourmaline) crystals from the Childs Aldwinkle Mine in Arizona, USA contains an attractive collection of typical pegmatite specimens from this well known American locality. The specimens display light to grey green mineralization within a quartz and feldspar rich matrix and provide a good impression of the characteristic material from this occurrence.
Rosterite is a light colored variety of Tourmaline and is appreciated by collectors for its association with the diverse Tourmaline group. This flat offers an interesting overview of the mineral material from the Childs Aldwinkle Mine and is suitable both as a collector's item and as representative material from a classic pegmatite locality in Arizona.
Geology & Origin
The Childs Aldwinkle Mine in Arizona is known for its pegmatitic mineralization formed during the late stages of magmatic activity. Within these coarse grained rock bodies, numerous minerals developed, including several varieties of Tourmaline. Rosterite occurs here together with Quartz and Feldspar and is considered one of the characteristic minerals of this locality. The mine has long been recognized among mineral collectors for its diverse pegmatite material.
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) |