Vale da Vilariça, Horta da Vilariça, Torre de Moncorvo, Bragança District, Portugal
Sample with 7x4x4cm (Ray effect) - December of 1999
© Photo & Collection of Martins da Pedra
Mount Shadwell, Mortlake, Moyne Shire, Victoria, Australia
Quartz xenoliths occur in the scoria from the quarry on Mount Shadwell. There may be some volcanic glass associated with the quartz. This specimen is a hand-sized 'volcanic bomb' with a quartz interior. Numerous cracks in this xenolith may have been caused by the heat of the enclosing magma. The glassy material in some cracks looks like melted ...
© Judy Rowe
Meteor Crater, Winslow, Coconino Co., Arizona, USA
Specimen on display at the University of New Mexico Geology Museum. P. Cristofono photo.
© 2008 Peter Cristofono
Libyan Desert Glass Area, Great Sand Sea, Western Desert, Egypt
Libian desert glass (lechatelerite). Specimen is from the collection of the British Museum of Natural History #1906,362 (1975). Scale at bottom of image is an inch with a rule at one cm.
© Rock Currier
Pure silica with embedded sand grains left presumably by a lightning strike. Width of field 7.0mm. Collection and photo Jesse Crawford. Nikon D-100 digital camera using a Zeiss 1.0x objective and Olympus 2.5x projective ocular on a Zeiss standard microscope frame. I use a Nikon UFX-II controller modified for use with the Nikon digital camera ...
© 2010 by Jesse Crawford All rights Reserved
Besednice, Český Krumlov, South Bohemia Region, Bohemia, Czech Republic
Incredible inclusions of lechatelierite in a moldavite specimen. FOV 15mm. Photograph and collection C.Mercer
Black Rock Desert, Millard Co., Utah, USA
Lechatelierite (var. fulgurite). Photographed by, and in the collection of Dan Costian.
© Dan Costian
Polk Co., Florida, USA
Part of a fulgurite, very glassy inside and coarse outside; acquired at the Tucson show 1999. Collection and photo Erik Vercammen.