Results 191 to 200 of about 6,402,726 (225)
Some of the next articles are maybe not open access.

Fibrous nanoinclusions in massive rose quartz: The origin of rose coloration

American Mineralogist, 2001
Pink nanofibers were extracted from rose quartz from 29 different pegmatitic and massive vein localities throughout the world. Their width varied from 0.1 to 0.5 μm. On the basis of optical absorption spectra of the fibers and the initial rose quartz, we conclude that these nanofibrous inclusions are the cause of coloration of massive rose quartz ...
Julia S. Goreva   +2 more
openaire   +2 more sources

Dynamic biaxial absorption spectra of Ti3+ and Fe2+ in a natural rose quartz crystal

Mineralogical Magazine, 1985
AbstractThe absorption spectrum of Ti3+ in quartz is typical for that element in an octahedral site, except for the high oscillator strength of the band which indicates intensive charge transfer, most likely between a substitutional Ti4+ and an interstitial Ti3+.
A. J. Cohen, L. N. Makar
openaire   +2 more sources

The First (and Second) Known Occurrences of Bazzite in Canada – The Quadeville Rose Quartz Quarry, Ontario, and the Bugaboo Castles Aquamarine Deposit, British Columbia – Description and Crystal Structure

The Canadian Journal of Mineralogy and Petrology
Abstract Bazzite, ideally Be3Sc2Si6O18, has been discovered for the first time at two granitic pegmatite localities in Canada: the Quadeville Rose Quartz quarry, Ontario (Bz-ON/CMNMC 90604), and the Bugaboo Castles aquamarine deposit, Purcell mountains, British Columbia (Bz-BC/CMNMC 90725). Bazzite from both Canadian localities occurs as
Paula C. Piilonen   +5 more
openaire   +2 more sources

Collecting Rose Quartz and other Minerals on Plumbago Mountain

Rocks & Minerals, 1973
(1973). Collecting Rose Quartz and other Minerals on Plumbago Mountain. Rocks & Minerals: Vol. 48, No. 2, pp. 75-77.
G. E. Gregory
openaire   +2 more sources

The orientation and symmetry of light spots and asterism in rose quartz spheres from Madagascar

The Journal of Gemmology, 2006
The orientation of light spots on the surface of four asteriated rose quartz spheres from Madagascar is described. The up to 50 different light spots form similar patterns on all samples examined with respect to their orientation, but are somewhat different according to their relative intensity.
Karl Schmetzer, Michael Krzemnicki
openaire   +2 more sources

Titanium Colour Centres in Rose Quartz

Nature, 1963
P. M. WRIGHT   +3 more
openaire   +2 more sources

Rose Quartz

Dictionary of Geotourism, 2019
openaire   +2 more sources

A charge transfer mechanism for the colour of rose quartz

Physica Status Solidi (a), 1978
G. Smith   +4 more
openaire   +2 more sources

Home - About - Disclaimer - Privacy