Database of Raman spectroscopy, X-ray diffraction and chemistry of minerals

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Mineral contains: Opal

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Ayalew D, Pik R, Gibson S, Yirgu G, Ali S, Assefa D (2020) Pedogenic origin of Mezezo opal hosted in Ethiopian Miocene rhyolites. The Canadian Mineralogist 58, 231-246
Chauviré B, Rondeau B, Mangold N (2017) Near infrared signature of opal and chalcedony as a proxy for their structure and formation conditions. European Journal of Mineralogy 29, 409-421
de Jong B H W S, van Hoek J, Veeman W S, Manson D V (1987) X-ray diffraction and ²⁹Si magic-angle-spinning NMR of opals: incoherent long- and short-range order in opal-CT. American Mineralogist 72, 1195-1203
Drees L R, Wilding L P, Smeck N E, Senkayi A L (1989) Silica in soils: quartz and disordered silica polymorphs. in Minerals in Soil Environments, Editor S B Weed. Soil Science Society of America (Madison Wisconsin, USA) 913-974
Eckert J, Gourdon O, Jacob D E, Meral C, Monteiro P J M, Vogel S C, Wirth R, Wenk H R (2015) Ordering of water in opals with different microstructures. European Journal of Mineralogy 27, 203-213
Elzea J M, Odom I E, Miles W J (1994) Distinguishing well ordered opal-CT and opal-C from high temperature cristobalite by X-ray diffraction. Analytica Chimica Acta 286, 107-116
Elzea J M, Odom I E, Miles W J (1994) Distinguishing well ordered opal-CT and opal-C from high temperature cristobalite by x-ray diffraction. Analytica Chimica Acta 286, 107-116
Elzea J M, Rice S B (1996) TEM and X-ray diffraction evidence for cristobalite and tridymite stacking sequences in opal. Clays and Clay Minerals 44, 492-500
Fritsch E, Megaw P K M, Spano T L, Chauviré B, Rondeau B, Gray M, Hainschwang T, Renfro N (2015) Green-luminescing hyalite opal from Zacatecas, Mexico. The Journal of Gemmology 34, 490-508
Guthrie G D, Bish D L, Reynolds R C (1995) Modeling the X-ray diffraction pattern of opal-CT. American Mineralogist 80, 869-872
Hoffmann C A S (1789) Mineralsystem des Herrn Inspektor Werners mit dessen Erlaubnis herausgegeben von C A S Hoffmann. Bergmannisches Journal 1, 369-398
Ilieva A, Mihailova B, Tsintsov Z, Petrov O (2007) Structural state of microcrystalline opals: a Raman spectroscopic study. American Mineralogist 92, 1325-1333
Lee S, Xu H, Xu H (2022) Reexamination of the structure of opal-A: A combined study of synchrotron X-ray diffraction and pair distribution function analysis. American Mineralogist 107, 1353-1360
Liesegang M, Milke R (2014) Australian sedimentary opal-A and its associated minerals: Implications for natural silica sphere formation. American Mineralogist 99, 1488
Martin E, Gaillou E (2018) Insight on gem opal formation in volcanic ash deposits from a supereruption: A case study through oxygen and hydrogen isotopic compostion of opals from Lake Tecopa, California, U.S.A.. American Mineralogist 103, 803-811
Monger H C, Kelly E F (2002) Silica minerals. in Soil Mineralogy with Environmental Applications, Soil Science Society of America (Madison Wisconsin, USA) 611-636
Nagase T, Akizuki M (1997) Texture and structure of opal-CT and opal-C in volcanic rocks. The Canadian Mineralogist 35, 947-958
Natkaniec-Nowak L, Dumańska-Słowik M, Gaweł A, Łatkiewicz A, Kowalczyk-Szpyt J, Wolska A, Milovská S, Luptáková J, Ładoń K (2020) Fire agate from the Deer Creek deposit (Arizona, USA) – new insights into structure and mineralogy. Mineralogical Magazine 84, 343-354
Ostrooumov M, Fritsch E, Lasnier B, Lefrant S (1999) Spectres Raman des opales : aspect diagnostique et aide à la classification. European Journal of Mineralogy 11, 899-908
Othmane G, Allard T, Menguy N, Morin G, Esteve I, Fayek M, Calas G (2013) Evidence for nanocrystals of vorlanite, a rare uranate mineral, in the Nopal I low-temperature uranium deposit (Sierra Peña Blanca, Mexico). American Mineralogist 98, 518-521
Petruk W, Farrell D M, Laufer E E, Tremblay R J, Manning P G (1977) Nontronite and ferruginous opal from the Peace River iron deposit in Alberta, Canada. The Canadian Mineralogist 15, 14-21
Pewkliang B, Pring A, Brugger J (2008) The formation of precious opal: Clues from the opalization of bone. The Canadian Mineralogist 46, 139-149
Rey P F (2013) Opalisation of the Great Artesian Basin (central Australia): an Australian story with a Martian twist. Australian Journal of Earth Sciences 60, 291-314
Rodgers K A, Hampton W A (2003) Laser Raman identification of silica phases comprising microtextural components of sinters. Mineralogical Magazine 67, 1-13
Sanders J V (1975) Microstructure and crystallinity of gem opals. American Mineralogist 60, 749-757
Sato M (1962) Tridymite crystals in opaline silica from Kusatsu, Gumma Prefecture. Mineralogical Journal 3, 296-305
Smith B Y, Turner S J, Rodgers K A (2003) Opal-A and associated microbes from Wairakei, New Zealand: the first 300 days. Mineralogical Magazine 67, 563-579
Sun M S (1962) Tridymite (low form) in some opal of New Mexico. American Mineralogist 47, 1453-1455
Wallerius J G (1747) in Mineralogia, eller Mineralriket, (Stockholm)
Yuan P, Liu D, Zhou J, Tian Q, Song Y, Wei H, Wang S, Zhou J, Deng L, Du P (2019) Identification of the occurrence of minor elements in the structure of diatomaceous opal using FIB and TEM-EDS. American Mineralogist 104, 1323-1335
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