Jaloul Bejaoui, Salah Bouhel, Donatella Barca (2013): Geology, Mineralogy and Fluid inclusions investigation of the Fluorite deposit at Jebel El Kohol, northeastern Tunisia. Periodico di Mineralogia, 82, 217-237.

Reference Search (possible matching items)

	*Georges Calas, (1972) On the blue colour of natural banded fluorites. Mineralogical Magazine, 38 (300) 977-979 doi:10.1180/minmag.1972.038.300.13*	Journal (article/letter/editorial)
	Chavaniac, Haute Loire) and a Tunisian deposit (Djebel el Kohol) with a Cary 14 spectrophotometer: these spectra...Blue-John fluorite: fluorites (at room temperature). Natural samples from: Diebel el Kohol (Tunisia), A; Valzergues...role of sulphur in the coloration of Blue John fluorite IN a recent paper (MacKenzie and Green, I97 I)...theories concerning the coloration of Blue John fluorite were examined in the light of experimental evidence
	*Bill, H., Calas, G. (1978) Color centers, associated rare-earth ions and the origin of coloration in natural fluorites. Physics and Chemistry of Minerals, 3 (2) 117-131 doi:10.1007/bf00308116*	Journal (article/letter/editorial)
	several specific cases as for instance the blue-john fluorite or the rose one. A few reviews have been published...Fig. 4. Optical absorption spectrum of yellow fluorite from Valzergues, France first called "R center"...equivalent to a true R center, which consists in the fluorite lattice of three nearest-neighbor F centers aligned...trivalent ions into the crystal structure of the fluorite, in substitution for Ca 2 + ions. The charge compensation...and Williams (1962). The divalent Eu z ÷ ion in fluorite is virtually always observed in cubic symmetry
	Kogel, Jessica Elzea, Trivedi, Nikhil C., Barker, James M., Krukowski, Stanley T. - Eds. (2006) Industrial Minerals and Rocks (7th ed.) Society for Mining, Metallurgy, and Exploration, Inc., Littleton, CO.	Book (edition)
	Harvey GNS Science Taupo, New Zealand Hassan E. El-Shall Kip Jeffrey Department of Materials Science...Wyoming Ayman El-Midany George C. Hawley and Associates Brossard, Quebec, Canada Hassan E. El-Shall National...number are worked together as coproducts, such as fluorite and barite from Mississippi Valley–type lead-zinc...gained greater im portance, such as t he rare e arth el ements i n electronics and mobile phones, and o thers...Halides a nd chlorides l ike carnallite, cryolite, fluorite, sellaite, and sylvite • Organics ran ging from

Fluorite from Djebel el Kohol, Zaghouan, Zaghouan, Tunisia

Fluorite from
Djebel el Kohol, Zaghouan, Zaghouan, Tunisia