(en) Boris Chauviré, Mickal Houadria, Aline Donini, Brian T. Berger, Benjamin Rondeau et al., « Arthropod entombment in weathering-formed opal: new horizons for recording life in rocks », Scientific Reports, vol. 10, , article no 10575 (DOI10.1038/s41598-020-67412-9).
google.ca
books.google.ca
James Dwight Dana, George Jarvis Brush (1877) A System of Mineralogy: Descriptive Mineralogy, John Wiley & Sons, New York (NY), 5e éd., 827 p., p. 199, citant entre autres Bibl. Brittan. [Bibliothèque britannique, tome 1], 185, 1796 "(? name fiorite here given)"
Histoire naturelle des minéraux, tome troisième, 1785, page 598
hal.science
hal.science
(en) Gaillou, « The geochemistry of gem opals as evidence of their origin », Ore Geology Review, vol. 104, , p. 113-126 (HALinsu-00323885, lire en ligne [PDF])
insu.hal.science
(en) Gaillou, « The geochemistry of gem opals as evidence of their origin », Ore Geology Review, vol. 104, , p. 113-126 (HALinsu-00323885, lire en ligne [PDF])
(en) Chauviré, « DSC of natural opal: insights into the incorporation of crystallisable
water in the opal microstructure », Journal of Thermal Analysis and Calorimetry, (lire en ligne)
tandfonline.com
(en) Jones & Segnit, « The nature of opal I. Nomenclature and constituent phases », Journal of the Geological Society of Australia, vol. 18, , p. 57-68 (lire en ligne)
wikipedia.org
de.wikipedia.org
(en) Max Hutchinson Hey, An index of mineral species & varieties arranged chemically 1955, British Museum (Natural History). Dept. of Mineralogy
