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Mogánite

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About MogániteHide

Formula:
SiO2
Colour:
Grey
Lustre:
Vitreous
Hardness:
6
Specific Gravity:
2.55 (Calculated)
Crystal System:
Monoclinic
Name:
After the type locality: Mogán, Grand Canary Island, Spain.
This SiO2 modification is not uncommon as a minor component of finely crystalline chalcedony (as well as chert or flint), although some samples may contain up to about 50 vol.% of moganite.
It may be identified by careful powder diffraction analysis or Raman and infrared spectroscopy.

Polymorphous (or polytypic?) with UM2000-61-SiO.


Classification of MogániteHide

Approved
4.DA.20

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
A : With small cations: Silica family
7.8.9

7 : Oxides and Hydroxides
8 : Oxides of Si

Physical Properties of MogániteHide

Vitreous
Transparency:
Translucent
Colour:
Grey
Hardness:
Density:
2.55 g/cm3 (Calculated)

Optical Data of MogániteHide

Type:
Biaxial
RI values:
nα = 1.524 nγ = 1.531
Max Birefringence:
δ = 0.007
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
not discernible

Chemical Properties of MogániteHide

Formula:
SiO2
IMA Formula:
SiO2 · nH2O

Crystallography of MogániteHide

Crystal System:
Monoclinic
Cell Parameters:
a = 8.75 Å, b = 4.87 Å, c = 10.71 Å
β = 90.09°
Ratio:
a:b:c = 1.797 : 1 : 2.199
Unit Cell V:
456.38 ų (Calculated from Unit Cell)

Type Occurrence of MogániteHide

Synonyms of MogániteHide

Other Language Names for MogániteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
13 photos of Mogánite associated with ChalcedonySiO2

Related Minerals - Nickel-Strunz GroupingHide

4.DA.Carbon Dioxide IceCO2
4.DA.05QuartzSiO2Trig. 3 2 : P31 2 1
4.DA.10OpalSiO2 · nH2O
4.DA.10TridymiteSiO2Tric. 1
4.DA.15CristobaliteSiO2Tet. 4 2 2 : P41 21 2
4.DA.25Melanophlogite46SiO2 · 6(N2,CO2) · 2(CH4,N2)Tet.
4.DA.30LechatelieriteSiO2Amor.
4.DA.35CoesiteSiO2Mon. 2/m : B2/b
4.DA.40StishoviteSiO2Tet. 4/mmm (4/m 2/m 2/m) : P42/mnm
4.DA.45KeatiteSiO2
4.DA.50SeifertiteSiO2Orth. mmm (2/m 2/m 2/m) : Pbcn

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

7.8.1QuartzSiO2Trig. 3 2 : P31 2 1
7.8.2CoesiteSiO2Mon. 2/m : B2/b
7.8.3TridymiteSiO2Tric. 1
7.8.4StishoviteSiO2Tet. 4/mmm (4/m 2/m 2/m) : P42/mnm
7.8.5CristobaliteSiO2Tet. 4 2 2 : P41 21 2
7.8.6LechatelieriteSiO2Amor.
7.8.7Silhydrite3SiO2 · H2OOrth.
7.8.8OpalSiO2 · nH2O

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for MogániteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Flörke, O.W., Jones, J.B., Schmincke, H.-U. (1976) A new microcrystalline silica from Gran Canaria. Zeitschrift für Kristallographie: 143: 156-165.
Flörke, O.W., Flörke, U., Giese, U. (1984) Moganite, a new microcrystalline silica-mineral. Neues Jahrbuch für Mineralogie, Abhandlungen: 149: 325-336.
Dunn, P.J. (1985) New mineral names. American Mineralogist: 70: 874.
Barrera Morate, J.L., Gomez Sainz de Aja, J.A. and Cueto Pascual, L.A. (1986) Mapa Geológico de España 1:50.000 - MAGNA 50, Hoja 1113 - Mogán. IGME. Madrid.
Miehe, B., Graetsch, H., Flörke, O.W., Fueß (1988) Die monokline Kristallstruktur des SiO2-Minerals Moganit. Zeitschrift für Kristallographie: 182: 183-184.
Heaney, P.J., Post, J.E. (1992) The widespread distribution of a novel silica polymorph in microcrystalline quartz varieties. Science: 255: 441-443.
Miehe, G., Graetsch, H. (1992) Crystal structure of moganite: A new structure type for silica. European Journal of Mineralogy: 4: 693-106.
Jambor, J.L. (1993) New mineral names. American Mineralogist: 78: 677.
Kingma, K.J., Hemley, R.J. (1994) Raman spectroscopic study of microcrystalline silica. American Mineralogist: 79: 269-273.
Jambor, J.L., Grew, E.S., Roberts, A.C. (1996) New mineral names. American Mineralogist: 81: 1513-1518.
Götze, J., Nasdala, L., Kleeberg, R., Wenzel, M. (1998) Occurrence and distribution of "moganite" in agate/chalcedony: a combined micro-Raman, Rietveld, and cathodoluminescence study. Contributions to Mineralogy and Petrology: 133: 96-105.
Parthasarathy, G., Kunwar, A.C., Srinivasan, R. (2001) Occurrence of moganite-rich chalcedony in Deccan flood basalts, Killari, Maharashtra, India. European Journal of Mineralogy: 13: 127-134.
Rodgers, K.A., Cressey, G. (2001) The occurrence, detection and significance of moganite (SiO2) among some silica sinters. Mineralogical Magazine: 65: 157-167.
Heaney, P.J., Post, J.E. (2001) Evidence for an I2/a to Imab phase transition in the silica polymorph moganite at ~570 K. American Mineralogist: 86: 1358-1366.
Rodgers, K.A., Hampton, W.A. (2003) Laser Raman identification of silica phases comprising microtextural components of sinters. Mineralogical Magazine: 67: 1-13.
Moxon, T., Rios, S. (2004) Moganite and water content as a function of age in agate: an XRD and thermogravimetric study. European Journal of Mineralogy: 16: 269-278.
Heaney, P.J., McKeown, D.A., Post, J.E. (2007) Anomalous behavior at the I2/a to Imab phase transition in SiO2-moganite: an analysis using hard-mode Raman spectroscopy. American Mineralogist: 92: 631-639.
Schmidt, P., Bellot-Gurlet, L., Slodczyk, A., Fröhlich, F. (2012) A hitherto unrecognised band in the Raman spectra of silica rocks: influence of hydroxylated Si–O bonds (silanole) on the Raman moganite band in chalcedony and flint (SiO2). Physics and Chemistry of Minerals: 39: 455-464.
Schmidt, P., Bellot-Gurlet, L., Lea, V., Sciau, P. (2013) Moganite detection in silica rocks using Raman and infrared spectroscopy. European Journal of Mineralogy: 25: 797-805.
Zhang, M., Moxon, T. (2014) Infrared absorption spectroscopy of SiO2-moganite. American Mineralogist: 99: 671-680.
Calvo, M. (2016) Minerales y Minas de España. Vol VIII. Cuarzo y otros minerales de la sílice. Escuela Técnica Superior de Ingenieros de Minas de Madrid. Fundación Gómez Pardo. 399pp. (in Spanish)
Zhu, T., Xin, L., Fang, A., Li, W., Wang, X., Lou, X., Zhang, M. (2017) A review of research on a new silica polymorph-moganite. Acta Mineralogica Sinica: 37: 159-167.

Internet Links for MogániteHide

Localities for MogániteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Antarctica
 
  • Western Antarctica
    • Antarctic Peninsula
      • South Shetland Islands
        • King George Island
Steve Sorrell Collection
Australia
 
  • Western Australia
    • Meekatharra Shire
      • Sylvania Station
Fetherston, J.M., Stocklmayer, S.M., Stocklmayer, V.C. (2013) Gemstones of Western Australia. Geological Survey of Western Australia, Mineral Resources Bulletin 25, 306p.
Austria
 
  • Burgenland
    • Oberwart District
Carolus Clusius (1601) Rariorum plantarum historia mineralienatlas.de
Götzinger, M. A.
Brazil
 
  • Goiás
    • Catalão II Carbonatite Complex
      • Catalão
Vik Vanrusselt Collection
  • Rio Grande do Sul
Personal knowledge from years of dealing with the geodes from this locality [Rock Currier 2011]
Bulgaria
 
Janakieva, Zh., Ch. Nachev, D. Yordanova. Finds of Moganite in Bulgaria.Poster.ІІІ International Symposium “Mineral diversity -Research and preservation” 7-10 October, 2005, Sofia.
Janakieva, Zh., Ch. Nachev, D. Yordanova. Finds of Moganite in Bulgaria.Poster.ІІІ International Symposium “Mineral diversity -Research and preservation” 7-10 October, 2005, Sofia.
  • Varna Province
Janakieva, Zh., Ch. Nachev, D. Yordanova. Finds of Moganite in Bulgaria.Poster.ІІІ International Symposium “Mineral diversity -Research and preservation” 7-10 October, 2005, Sofia.
Canada
 
  • New Brunswick
    • Charlotte Co.
Grand Manan Museum
China
 
  • Liaoning
    • Chaoyang
      • Beipiao City
Zhang, X.; Ji, L.; He, X. (2020) Gemological Characteristics and Origin of the Zhanguohong Agate from Beipiao, Liaoning Province, China: A Combined Microscopic, X-ray Diffraction, and Raman Spectroscopic Study. Minerals 10, 401.
Czech Republic
 
  • South Moravian Region
    • Brno-Country District
      • Oslavany
        • Nová Ves
Koníčková Š., Losos Z., Hrazdil V., Houzar S., Všianský D. (2016): Mineralogie „očkových“ opálů z Nové Vsi u Oslavan (moldanubikum, Český masív). Bulletin mineralogicko-petrologického oddělení Národního muzea v Praze 24, 1: 144-158.
Egypt
 
  • Cairo
    • Al Qahirah (Cairo)
      • East Cairo
Hassan, K.M. (2014): The fossil wood of East Cairo, Egypt: A mineralogical view. Mineralogia: 45(1-2), 47-57
Finland
 
  • Lapland
    • Sodankylä
Valkama, Jorma (2019). Kalsedoniaiheen tutkimus Sodankylän Kaitaselässä. Mineralia Kiviharrasajan Kuvalehti Nro 1/2019 sivut 33-35
Jouni Laurinperä photo and collection ( photo id 965669 + 965670 )
France
 
  • Auvergne-Rhône-Alpes
    • Loire
      • Saint-Étienne
        • Saint-Priest-en-Jarez
G. Demarcq, 1973, "Guides Géologiques Régionaux : Lyonnais, Vallée du Rhône" , p. 88, Masson.
  • Ile-de-France
    • Paris
  • Provence-Alpes-Côte d'Azur
    • Vaucluse
      • Apt
F. Roulin et al. , 1986, 109, pp. 349-357.
Germany
 
  • Thuringia
    • Saale-Orla District
      • Hirschberg
        • Ullersreuth
T. Witzke et al.: Lapis 2001(12), 13-27
Hungary
 
  • Budapest
  • Heves County
GEODA, 2000
India
 
  • Maharashtra
    • Latur District
Eur. Jour. Min. 13, no. 1(2001)
Indonesia
 
  • West Sulawesi Province
Raman spectroscopy by Joel Dyer - https://www.mindat.org/forum.php?read,6,385869,421736#msg-421736
Japan
 
  • Ehime Prefecture
    • Kamiukena District
Confirmed by Dr D. Nishio-Hamane using TEM and Raman spectroscopy.
  • Niigata Prefecture
    • Higashikambara District
      • Aga
Matsubara and Miyawaki (2006) Catalogue of Japanese Minerals. (Tokai University Press)
Luxembourg
 
  • Canton Clervaux
    • Wincrange
http://www.mnhn.lu/recherche/ferrantia/publications/Ferrantia49.pdf
Netherlands
 
T.G. Nijland, J.C. Zwaan, D. Visser, J. Leloux - De mineralen van Nederland - 2007
New Zealand
Rodgers, K.A., Cressey, G. (2001) The occurrence, detection and significance of moganite (SiO₂) among some silica sinters. Mineralogical Magazine, 65:2, 157-167.
  • Northland Region
    • Whangarei District
Mineralogical Magazine; February 2004; v. 68; no. 1; p. 191-198
Norway
 
  • Oslo
    • Grorud
Kvamsdal, L. O. (1999): Mineralene fra Huken pukkverk i Oslo. STEIN 26 (4), 14-47
Poland
 
  • Silesian Voivodeship
    • Bytom City County
Kruszewski, Ł. (2018)(?): Geochemical Behavior of Trace Elements in Upper and Lower Silesian Basin Coal-Fire Gob Piles, Poland. Coal and Peat Fires, vol. 5, xx-xx (in review/correction); Ł. Kruszewski EPMA/PXRD data
    • Rybnik City County
Ł. Kruszewski PXRD data
Romania
 
  • Mehedinti
    • Breznița-Ocol
Udubaªa, S. S., Constantinescu, S., Popescu-pogrion, N., Grecu, N. M. & Udubaªa, G. (2006) Mössbauer (ngr), Xrd, Tem/saed And Esr Investigations On Some Sulphides From Costeªti, Valea Lui Stan And Jidoªtiþa Gold Ores (southern Carpathians, Romania). Acta Miner.-Petrograph.,Abstract Series 5, Szeged, p.123
  • Suceava
    • Suceava district
      • Iacobeni
http://minerals-of-the-carpathians.eu
        • Tolovanu
Udubașa, G., Ďud'a, R., Szakáll, S., Kvasnytsya, V., Koszowska, E., Novák, M. (2002): Minerals of the Carpathians (Szakáll, S., ed.). Granit, Prague, Czech Rep., 482 pp. Hîrtopanu, P. (1997): Tolovanu manganese mine. In: Nedelcu, L., Moga, C., Podasca, I., Hirtopanu, P. (Eds.), Crystalline zone of the East Carpathians (Northern Bistrița Mts.): Structure, lithostratigraphy, metamorphism and metallogeny. Valea Putnei-Valea Bistriței. Romanian Journal of Mineralogy: 78 (Suppl. 2): 25-34
  • Vâlcea
Udubaªa, S. S., Constantinescu, S., Popescu-pogrion, N., Grecu, N. M. & Udubaªa, G. (2006) Mössbauer (ngr), Xrd, Tem/saed And Esr Investigations On Some Sulphides From Costeªti, Valea Lui Stan And Jidoªtiþa Gold Ores (southern Carpathians, Romania). Acta Miner.-Petrograph.,Abstract Series 5, Szeged, p.123
Russia
 
  • Samara Oblast
Sidorov A.A. Mineralogy of Vodinskoe deposit, 2013
Slovakia
 
  • Banská Bystrica Region
    • Žiar nad Hronom District
      • Kremnica
Ďuďa R., 1993 : Die mineralien der Gold und Silber - lagersttäte von Kremnitz ( Kremnica) in der Slowakei. Mineralien Welt /Haltern,Nemecko/,5, s. 20 - 32
  • Košice Region
    • Košice-okolie District
Koděra, M. et al., 1986 a 1990 : Topografická mineralógia Slovenska, diel 1- 3, Veda – Vydavateľstvo SAV, Bratislava, 1990, 1 – 1590k
Koděra, M. et al., 1986 a 1990 : Topografická mineralógia Slovenska, diel 1- 3, Veda – Vydavateľstvo SAV, Bratislava, 1990, 1 – 1590k
    • Trebišov District
      • Kuzmice
Koděra, M. et al., 1986 a 1990 : Topografická mineralógia Slovenska, diel 1- 3, Veda – Vydavateľstvo SAV, Bratislava, 1990, 1 – 1590
Koděra, M. et al., 1986 a 1990 : Topografická mineralógia Slovenska, diel 1- 3, Veda – Vydavateľstvo SAV, Bratislava, 1990, 1 – 1590
  • Žilina Region
    • Turčianske Teplice District
Koděra et all.,1990: Topografická mineralógia Slovenska, I-III, 1590p
Spain (TL)
 
  • Canary Islands
    • Las Palmas Province
      • Gran Canaria
American Mineralogist, volume 070, pp. 874(1985)
          • Playa de Mogán
American Mineralogist (1993): 78: 677.
Herrero, M.J.; Marfil, R.; Escavy, J.I.; Al-Aasm, I.; Scherer, M. (2020) Diagenetic Origin of Bipyramidal Quartz and Hydrothermal Aragonites within the Upper Triassic Saline Succession of the Iberian Basin: Implications for Interpreting the Burial–Thermal Evolution of the Basin. Minerals 10, 177.
UK
 
  • England
    • Derbyshire
      • Derbyshire Dales District
        • Ashford in the Water
Ford, T., A. Sarjeant & M. Smith (1993): The minerals of the Peak district of Derbyshire. UK Jour. Mines & Minerals 13, 16-55.
    • Dorset
      • Purbeck
        • Steeple with Tyneham
          • Worbarrow Bay
Paul Render
        • West Lulworth
www.soton.ac.uk/~imw/Purbeck-evaporites.htm.
Ukraine
 
  • Ternopil Oblast
    • Borschiv Raion
Klimchouk, A. (2012). Gypsum karst in the Western Ukraine. International Journal of Speleology, 25(3), 20.
USA
 
  • Arizona
    • Graham Co.
Natkaniec-Nowak, L., Dumańska-Słowik, M., Gaweł, A., Łatkiewicz, A., Kowalczyk-Szpyt, J., Wolska, A., ... & Ładoń, K. (2020). Fire agate from the Deer Creek deposit (Arizona, USA)–new insights into structure and mineralogy. Mineralogical Magazine, 84(2), 343-354.
  • California
    • Los Angeles Co.
      • Santa Monica Mountains
        • Agoura Hills
http://www.mindat.org/article.php/2067/Three+new+melanophlogite+pseudomorph+localities+from+Santa+Monica+Mts%2C+So.Calif.
  • Colorado
    • Rio Blanco Co.
Minerals of Colorado (1997) E.B. Eckel
    • Saguache Co.
Rocks & Minerals (July-August, 2002)
Minerals of Colorado (1997) E.B. Eckel
  • Pennsylvania
    • Adams Co.
Ward's Natural Science Establishment (Rochester, NY) specimen
 
Mineral and/or Locality  
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