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Mogánite

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Mogán, Gran Canaria (Grand Canary), Las Palmas Province, Canary Islands
© Volker Betz

Formula:
SiO
 
2
System:MonoclinicColour:Grey
Hardness:6
Name:After the type locality: Mogán, Grand Canary Island, Spain.


Found as cryptocrystalline inclusions within a large number of quartz crystals.

Classification of Mogánite

IMA status:Approved
Nickel-Strunz 10th (pending) edition ID: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
Hey's CIM Ref.:7.8.9

7 : Oxides and Hydroxides
8 : Oxides of Si
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Type Occurrence of Mogánite

Type Locality:Mogán, Gran Canaria (Grand Canary), Las Palmas Province, Canary Islands
Year of Discovery:1984

Physical Properties of Mogánite

Lustre:Vitreous
Colour:Grey
Hardness (Mohs):6

Crystallography of Mogánite

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

Optical Data of Mogánite

Type:Biaxial
RI values: nα = 1.524 nγ = 1.531
Maximum Birefringence:δ = 0.007

Chart 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 Mogánite

Formula:
SiO
 
2
Essential elements:O, Si
All elements listed in formula:O, Si

Relationship of Mogánite to other Species

Related Minerals - Nickel-Strunz Grouping):
4.DA.05Quartz
SiO
 
2
4.DA.05Seifertite
SiO
 
2
4.DA.10Opal
SiO
 
2
·nH
 
2
O
4.DA.10Tridymite
SiO
 
2
4.DA.15Cristobalite
SiO
 
2
4.DA.25Melanophlogite
46SiO
 
2
·6(N
 
2
,CO
 
2
)·2(CH
 
4
,N
 
2
)
4.DA.30Lechatelierite
SiO
 
2
4.DA.35Coesite
SiO
 
2
4.DA.40Stishovite
SiO
 
2
4.DA.45Keatite
Related Minerals - Hey's Index Grouping:
7.8.1Quartz
SiO
 
2
7.8.2Coesite
SiO
 
2
7.8.3Tridymite
SiO
 
2
7.8.4Stishovite
SiO
 
2
7.8.5Cristobalite
SiO
 
2
7.8.6Lechatelierite
SiO
 
2
7.8.7Silhydrite
3SiO
 
2
·H
 
2
O
7.8.8Opal
SiO
 
2
·nH
 
2
O

Other Names for Mogánite

Synonyms:
IMA1999-035Lutecite
German names:
LutecitMoganit
Russian names:
Моганит
Spanish names:
LutecitaMoganita

Other Information

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

References for Mogánite

Reference List:Neues Jahrbuch für Mineralogie, Abhandlungen (1984): 149: 325-336.

American Mineralogist (1985): 70: 874.

American Mineralogist (1993): 78: 677.

Internet Links for Mogánite

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  • Raman and XRD data at RRUFF project
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    • Localities for Mogánite

    Hide Locality List
    The 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.
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    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    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 Oblast
    		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.
    Spain
     
    • Canary Islands
      • Las Palmas Province
        • Gran Canaria (Grand Canary)
    		American Mineralogist, volume 070, pp. 874(1985)
    France
     
    • Ile-de-France
      • Paris
    • Provence-Alpes-Côte d'Azur
      • Vaucluse
        • Apt
    		F. Roulin et al. , 1986, 109, pp. 349-357.
    • Rhône-Alpes
      • Loire
        • Saint-Etienne
    		G. Demarcq, 1973, "Guides Géologiques Régionaux : Lyonnais, Vallée du Rhône" , p. 88, Masson.
    Germany
     
    • Thuringia
      • Vogtland
        • Hirschberg
          • Ullersreuth
    		T. Witzke et al.: Lapis 2001(12), 13-27
    Hungary
     
    • Heves Co.
      • Mátra Mts.
    		GEODA, 2000
    • Pest Co.
      • Budai Mts.
        • Budapest
    India
     
    • Maharashtra
      • Latur District
    		Eur. Jour. Min. 13, no. 1(2001)
    Luxembourg
     
    • Diekirch District
      • Wincrange
    		http://www.mnhn.lu/recherche/ferrantia/publications/Ferrantia49.pdf
    New Zealand
    MinMag 65:157-167
    MinMag 65:157-167
    Norway
     
    • Oslo
      • Grorud
    		Kvamsdal, Lars O., 1999. Mineralene fra Huken pukkverk i Oslo. Stein, årg. 26, nr. 4, p. 33.
    Slovakia
     
    • Banská Bystrica Region
      • Kremnica Mts
    		Ďuďa R., 1993 : Die mineralien der Gold und Silber - lagersttäte von Kremnitz ( Kremnica) in der Slowakei. Mineralien Welt /Haltern,Nemecko/,5, s. 20 - 32
    Koděra et all.,1990: Topografická mineralógia Slovenska, I-III, 1590p
    • Košice Region
      • Southern Slanské Mts
    		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 – 1590
    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 – 1590
    UK
     
    • England
      • Dorset
    		www.soton.ac.uk/~imw/Purbeck-evaporites.htm.
    USA
     
    • Colorado
      • Rio Blanco Co.
    		Minerals of Colorado (1997) E.B. Eckels
      • Saguache Co.
    		Rocks & Minerals (July-August, 2002)
    Minerals of Colorado (1997) E.B. Eckels
    • Pennsylvania
      • Adams Co.
    		Ward's Natural Science Establishment (Rochester, NY) specimen
    Mineral and/or Locality
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