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Hajar | profile | all galleries >> Mineral Galleries >> Crystal Twins >> Twins of Orthorhombic Minerals >> Chrysoberyl Twins tree view | thumbnails | slideshow

Chrysoberyl Twins

A gemmy green 22 mm trilling twin from Minas Gerais, Brazil. This is a "floater", complete all round, with no contacts. The twin has a unique (in my experience) habit. One of the three component crystals, 22 mm long, is exposed on one side of the twin and symmetrically disposed on either side of that crystal are "rabbit ear" twins formed by the second and third component crystals. Whereas these appear as a pair of twins on one side of the trilling, viewed from the other side each appears as a single crystal.

Strange, intriguing and beautiful!

Two more conventional chrysoberyl twins from Brazil and another from Sri Lanka are shown at the end.
22 mm chrysoberyl twin, Minas Gerais, Brazil. Side view of trilling.
22 mm chrysoberyl twin, Minas Gerais, Brazil. Side view of trilling.		 Chrysoberyl twin.jpg
Chrysoberyl twin.jpg		 Brazil chrysoberyl trilling explanation
Brazil chrysoberyl trilling explanation
chrysoberyl0428110004.jpg
chrysoberyl0428110004.jpg		 22 mm chrysoberyl twin, Minas Gerais, Brazil. Side view of trilling.
22 mm chrysoberyl twin, Minas Gerais, Brazil. Side view of trilling.		 Brazil Chrysoberyl trilling, 30 mm
Brazil Chrysoberyl trilling, 30 mm
Brazil Chrysoberyl trilling, 20 mm
Brazil Chrysoberyl trilling, 20 mm		 Sri Lanka gem chrysoberyl twin, 10 mm.
Sri Lanka gem chrysoberyl twin, 10 mm.		 Alexandrite, Carnaiba Mine, Brazil, 28 mm.
Alexandrite, Carnaiba Mine, Brazil, 28 mm.
Chrysoberyl 1.jpg
Chrysoberyl 1.jpg		 Burma chrysoberyl twin
Burma chrysoberyl twin		 Burma chrysoberyl twin
Burma chrysoberyl twin

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Lewis Hall01-Jun-2011 20:13
You have a real nice collection of minerals and fossils. Thanks for sharing.
Lewis
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