Mindat Logo
Home Page Log In Message Board The Mindat Directory
Register Search Pages Mineral Chatroom The Mindat Store

Sekaninaite

This page is currently not sponsored. Click here to sponsor this page.
Big Photo

Dolní Bory, Žďár nad Sázavou, Vysočina Region, Moravia (Mähren; Maehren), Czech Republic
© Zbynek Burival

Show Sekaninaite Photos (11)



Formula:
(Fe,Mg)
 
2
Al
 
3
(AlSi
 
5
O
 
18
)
System:OrthorhombicColour:grayish-blue to ...
Hardness:7½
Name:Named after Josef Sekanina (1901-1986) Czech mineralogist.


The Fe analogue of Cordierite. Cordierite-Sekaninaite Series.

Classification of Sekaninaite

IMA status:Approved
Strunz 8th edition ID:8/E.12-50
Nickel-Strunz 10th (pending) edition ID:9.CJ.10

9 : SILICATES (Germanates)
C : Cyclosilicates
J : [Si6O18]12- 6-membered single rings (sechser-Einfachringe), without insular complex anions
Dana 8th edition ID:61.2.1.2

61 : CYCLOSILICATES Six-Membered Rings
2 : Six-Membered Rings with Al substituted rings
Hey's CIM Ref.:16.19.3

16 : Silicates Containing Aluminum and other Metals
19 : Aluminosilicates of Fe and Mg
mindat.org URL:http://www.mindat.org/min-3609.html
Please feel free to link to this page.

Type Occurrence of Sekaninaite

Type Locality:Dolní Bory, Žďár nad Sázavou, Vysočina Region, Moravia (Mähren; Maehren), Czech Republic
Year of Discovery:1968

Physical Properties of Sekaninaite

Lustre:Vitreous
Diaphaneity (Transparency):Transparent, Translucent
Colour:grayish-blue to bluish-violet
Hardness (Mohs):7½

Crystallography of Sekaninaite

Crystal System:Orthorhombic
Cell Parameters:a = 17.18Å, b = 9.82Å, c = 9.29Å
Ratio:a:b:c = 1.749 : 1 : 0.946
Unit Cell Volume:V 1,567.29 ų (Calculated from Unit Cell)

Optical Data of Sekaninaite

Type:Biaxial (-)
RI values: nα = 1.561 nβ = 1.572 nγ = 1.576
2V:Measured: 66° , Calculated: 60°
Maximum Birefringence:δ = 0.015

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Low
Dispersion:weak

Chemical Properties of Sekaninaite

Formula:
(Fe,Mg)
 
2
Al
 
3
(AlSi
 
5
O
 
18
)
Essential elements:Al, Fe, O, Si
All elements listed in formula:Al, Fe, Mg, O, Si
Common Impurities:Ti,Mn,Ca,Na,K,H2O

Relationship of Sekaninaite to other Species

Series:Forms a series with Cordierite (see here)
Related Minerals - Nickel-Strunz Grouping):

- +
9.CJ.05Bazzite
Be
 
3
Sc
 
2
(Si
 
6
O
 
18
)
9.CJ.05Beryl
Be
 
3
Al
 
2
(Si
 
6
O
 
18
)
9.CJ.05Indialite
Mg
 
2
Al
 
3
(AlSi
 
5
O
 
18
)
9.CJ.05Stoppaniite
Be
 
3
Fe
3+
2
(Si
 
6
O
 
18
) · H
 
2
O
9.CJ.10Cordierite
(Mg,Fe)
 
2
Al
 
3
(AlSi
 
5
O
 
18
)
9.CJ.15aCombeite
Na
 
2
Ca
 
2
(Si
 
6
O
 
18
)
 
0.5
9.CJ.15bImandrite
Na
 
12
Ca
 
3
Fe
3+
2
(Si
 
6
O
 
18
)
 
2
9.CJ.15aKazakovite
Na
 
6
Mn
2+
 
Ti(Si
 
6
O
 
18
)
9.CJ.15cKoashvite
Na
 
6
(Ca,Mn)(Ti,Fe)Si
 
6
O
 
18
 · H
 
2
O
9.CJ.15aLovozerite
Na
 
2
CaZr(H
 
4
Si
 
6
O
 
18
) · H
 
2
O
9.CJ.15aTisinalite
Na
 
3
H
 
3
(Mn,Ca,Fe)TiSi
 
6
(O,OH)
 
18
 · 2H
 
2
O
9.CJ.15aZirsinalite
Na
 
6
(Ca,Mn
2+
 
,Fe
2+
 
)Zr(Si
 
6
O
 
18
)
9.CJ.15aLitvinskite
Na
 
2
(◻,Na,Mn)ZrSi
 
6
O
 
12
(OH,O)
 
6
9.CJ.15aKapustinite
Na
 
5
(Na,Mn
2+
 
)
 
<1
Zr(H
 
2
Si
 
6
O
 
18
)
9.CJ.25Baratovite
KCa
 
7
(Ti,Zr)
 
2
Li
 
3
Si
 
12
O
 
36
F
 
2
9.CJ.25Katayamalite
KCa
 
7
Ti
 
2
Li
 
3
Si
 
12
O
 
36
(OH)
 
2
9.CJ.25Aleksandrovite
KCa
 
7
Sn
 
2
Li
 
3
Si
 
12
O
 
30
F
 
2
9.CJ.30Dioptase
CuSiO
 
3
 · H
 
2
O
9.CJ.35Kostylevite
K
 
2
Zr(Si
 
3
O
 
9
) · H
 
2
O
9.CJ.40Petarasite
Na
 
5
Zr
 
2
(Si
 
6
O
 
18
)(Cl,OH) · 2H
 
2
O
9.CJ.45Gerenite-(Y)
(Ca,Na)
 
2
(Y,REE)
 
3
Si
 
6
O
 
18
 · 2H
 
2
O
9.CJ.50Odintsovite
K
 
2
Na
 
4
Ca
 
3
Ti
 
2
Be
 
4
Si
 
12
O
 
38
9.CJ.55Mathewrogersite
Pb
 
7
FeAl
 
3
GeSi
 
12
O
 
36
(OH,H
 
2
O)
 
6
9.CJ.60Pezzottaite
Cs(Be
 
2
Li)Al
 
2
(Si
 
6
O
 
18
)
Related Minerals - Hey's Index Grouping:

- +
16.19.1Indialite
Mg
 
2
Al
 
3
(AlSi
 
5
O
 
18
)
16.19.2Cordierite
(Mg,Fe)
 
2
Al
 
3
(AlSi
 
5
O
 
18
)
16.19.4Ferrogedrite
☐{Fe
2+
2
}{Fe
2+
3
Al
 
2
}(Al
 
2
Si
 
6
O
 
22
)(OH)
 
2
16.19.5Staurolite
(Fe
2+
 
,Mg,Zn)
 
1.5-2
Al
 
9
(SiO
 
4
)
 
4
O
 
6
(OH,O)
 
2
16.19.6Chloritoid
(Fe
2+
 
,Mg,Mn
2+
 
)Al
 
2
(SiO
 
4
)O(OH)
 
2
16.19.7Amesite
Mg
 
2
Al(AlSiO
 
5
)(OH)
 
4
16.19.8Corundophilite
(Mg,Fe,Al)
 
6
(Si,Al)
 
4
O
 
10
(OH)
 
8
16.19.9Yoderite
Mg(Al,Fe
3+
 
)
 
3
(SiO
 
4
)
 
2
O(OH)
16.19.10Delessite
(Mg,Fe,Fe,Al)(Si,Al)
 
4
O
 
10
(O,OH)
 
8
16.19.11Ferrocarpholite
(Fe
2+
 
,Mg)Al
 
2
(Si
 
2
O
 
6
)(OH)
 
4
16.19.12Magnesiocarpholite
(Mg,Fe
2+
 
)Al
 
2
(Si
 
2
O
 
6
)(OH)
 
4
16.19.13Chamosite
(Fe
2+
 
,Mg)
 
5
Al(AlSi
 
3
O
 
10
)(OH)
 
8
16.19.14Orthochamosite
(Fe
2+
 
,Mg,Fe
3+
 
)
 
5
Al(AlSi
 
3
O
 
10
)(OH,O)
 
8
16.19.15Berthierine
(Fe,Fe,Mg)
 
2-3
((Si,Al)
 
2
O
 
5
)(OH)
 
4
16.19.16Odinite
(Fe,Mg,Al,Fe,Ti,Mn)
 
2.4
((Si,Al)
 
2
O
 
5
)(OH)
 
4
16.19.17Clinochlore
(Mg,Fe
2+
 
)
 
5
Al(AlSi
 
3
O
 
10
)(OH)
 
8
16.19.18Gedrite
☐{Mg
 
2
}{Mg
 
3
Al
 
2
}(Al
 
2
Si
 
6
O
 
22
)(OH)
 
2
16.19.19Magnesiogedrite
16.19.20Diabantite
(Mg,Fe,Al)
 
6
((Si,Al)
 
4
O
 
10
)(OH)
 
8
16.19.21Sudoite
(Mg,Fe
2+
 
)
 
2
Al
 
3
(AlSi
 
3
O
 
10
)(OH)
 
8
16.19.22Vermiculite
(Mg,Fe,Al)
 
3
((Al,Si)
 
4
O
 
10
)(OH)
 
2
 · 4H
 
2
O
16.19.23Corrensite
(Mg,Fe)
 
9
((Si,Al)
 
8
O
 
20
)(OH)
 
10
 · nH
 
2
O

Other Names for Sekaninaite

Synonyms:
FerrocordieriteIMA1967-047Iron-Cordierite
Other Languages:
German:Eisencordierit
Ferrocordierit
Sekaninait
Russian:Секанинаит
Spanish:Ferrocordierita
Sekaninaita

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 Sekaninaite

Reference List:

- +
Stanek, J. and Miskovsky, J. (1975) Sekaninaite, a new mineral of the cordierite series, from Dolni Bory, Czechoslovakia. Scr. Fac. Sci. Nat. Ujep Brun., Geol. 1(5), 21-30.

American Mineralogist (1977): 62: 395 (abstract).

Hochella, M.F., Jr., Brown, G.E., Jr.,
Ross, F.K., and Gibbs, G.V. (1979) High-temperature crystal chemistry of hydrous Mg- and Fe-cordierites. American Mineralogist: 64: 337-351.

Ryback, G., Nawaz, R., and Farley, E. (1988) Seventh supplementary list of British Isles minerals (Irish). Mineralogical Magazine: 52: 267-274.

Canadian Mineralogist (1997): 35: 167.

Yakubovich, O. V., Massa, V., Pekov, I. V., Gavrilenko, P. G. & Chukanov, N. V. (2004): Crystal structure of the Na-, Ca-, Be-cordierite and crystallochemical regularities in the cordierite-sekaninaite series. Crystallography Reports 49, 953-963.

Internet Links for Sekaninaite

Search Engines:
  • Look for Sekaninaite on Google
  • Look for Sekaninaite images on Google
    • External Links:
  • Look for Sekaninaite on Webmineral
  • Look for Sekaninaite on Athena Mineralogy
  • Look for Sekaninaite on Wikipedia
  • Look for Sekaninaite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Sekaninaite details from Handbook of Mineralogy (PDF)
    • Mineral Dealers:
  • Rare and Unusual minerals at Mineralogical Research Company
  • Fine Minerals from Weinrich Minerals, Inc.
  • Search for minerals at Heliodor
  • webminerals
  • Search for Sekaninaite from all mineral dealers at minfind.com
  • Search for - Sekaninaite - on e-Rocks Mineral Sales & Auctions
  • Pricedownminerals.com - Reverse Auctions and Shop
  • The Arkenstone - Fine Minerals
  • Top quality minerals from Kristalle of California
  • DAKOTA MATRIX offers Cabinet and Rare Species from Worldwide Localities.
  • Buy from David K Joyce minerals
  • Buy fine minerals and gemstones from Pala International
    • Jobs:
  • Mining & Geology Jobs

    • Localities for Sekaninaite

    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.
    Hide Locality List
    (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.
    Australia
     
    • Tasmania
      • Scottsdale district
    		Bottrill & Baker (in prep) Catalogue of minerals of Tasmania
    Austria
     
    • Styria
      • Bad Radkersburg
        • Klöch
    		Taucher, J. & Hollerer, C. E. (1998): Minerale eines Si- und Al-reichen Xenoliths aus dem Basaltsteinbruch von Klöch, Nördlicher Bruch, (Steiermark, Österreich). Mitt. naturwiss. Ver. Steiermark 128, 21-42.
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • Ústí Region
        • Bílina (Bilin)
    		Žáček V, Skála R., Dvořák Z.: Spinelidy v pyrometamorfovaných horninách Mostecké pánve. Minerál, 2010, 18, 1, 21-31.
    • Moravia (Mähren; Maehren)
      • South Moravia Region
        • Tišnov
          • Drahonín
    		Škoda, R., Novák, M.: Akcesorické Nb-Ta-Ti minerály z pegmatitu v uranovém dole Drahonín, strážecké moldanubikum. Acta Musei Moraviae, Scientiae geologicae, 2004, roč. 89, s. 55 - 66.
      • Vysočina Region
        • Žďár nad Sázavou
    		Scr.Fac.Sci.Nat. Ujep Brun.,geol.I (1975) no. 5, 21-30
    Germany
     
    • Bavaria
      • Upper Palatinate
        • Oberpfälzer Wald
          • Oberviechtach
            • Winklarn
    		Keck, E., Mücke, A., Kronz, A. & Stanĕk, J. (2010): Sekaninait aus einem Pegmatitgang im Serpentinit von Galgenberg bei Winklarn in der Oberpfalz. Der Aufschluss 61, 1-16 (in German).
    Italy
     
    • Piedmont
      • Verbano-Cusio-Ossola Province
        • Baveno
          • Oltrefiume
            • Mount Camoscio
    		Guastoni, A., Demartin, F., Pezzotta, F. (2004): Sekaninaite delle pegmatiti granitiche di Feriolo e Baveno (VB). Atti della Società Italiana di Scienze Naturali e del Museo Civico di Storia Naturale in Milano, 145, 59-68.
    • Tuscany
      • Livorno Province
        • Elba Island
          • Campo nell'Elba
    		Orlandi P., Pezzotta F.(1994): La sekaninaite dei filoni pegmatitici elbani. Atti Soc. Tosc. Sc. Nat,. Mem., 100, 85-91. and CanMin 38:1399-1408 (2000)
    Orlandi, P., & Pezzotta, F. (1997). Minerali dell'Isola d'Elba. Edizioni Novecento Grafico, Bergamo, 249 pp.
    Japan
     
    • Honshu Island
      • Kinki Region
        • Nara Prefecture
          • Yoshino-gun
            • Tenkawa village
              • Omine Mts
    		American Mineralogist 87: 160-170 (2002)
      • Tohoku Region
        • Fukushima Prefecture
    		Introduction to Japanese Minerals (Geological Survey of Japan, 1970)
    • Kyushu Region
      • Fukuoka prefecture
        • Tagawa-gun
          • Kawasaki
    		Masutomi Museum specimens (Kyoto)
    Poland
     
    • Lower Silesia (Dolnośląskie)
      • Strzegom-Sobótka Massif
        • Jawor District
    		Körber, T. & Szuzkiewicz, A. (2010): Striegau/Strzegom - eine Weltklasse-Fundstelle für Pegmatitmineralien. Lapis 35 (7-8), 35-56; 86.
    Russia
     
    • Far-Eastern Region
      • Magadanskaya Oblast'
        • Kolyma River Basin
          • Ducat District
            • Omsukchan
    		Filimonova, L.G., and Trubkin, N.V. (2008): Geology of Ore Deposits 50(2), 135-144.
    • Northern Region
      • Murmanskaja Oblast'
        • Kola Peninsula
          • Khibiny Massif
    		Ivanyuk, G.Y., Pakhomovsky, Y.A., Konopleva, N.G., Yakovenchuk, V.N., Men’shikov, Y.P., and Mikhailova, Y.A. (2007): Geology of Ore Deposits 49(7), 599-606.
    Yakovenchuk, V.N., Ivanyuk, G.Y., Pakhomovsky, Y.A., Men’shikov, Y.P., Konopleva, N.G., and Korchak, Y.A. (2008): Geology of Ore Deposits 50(8), 732-745.
    • Urals Region
      • Southern Urals
        • Chelyabinsk Oblast'
    		Cesnokov, B., Kotrly, M. and Nisanbajev, T. (1998): Brennende Abraumhalden und Aufschlüsse im Tscheljabinsker Kohlenbecken - eine reiche Mineralienküche. Mineralien-Welt, 9 (3), 54-63 (in German).
    Slovakia
     
    • Prešov Region
      • Prešov Co.
    		Košuth M., 2006: New type of cordierite assemblages from the Slanske vrchy Mts., Eastern Slovakia. Acta Miner.-Petrograph.,Abstract Series 5, Szeged, p.59
      • Vranov nad Topľou Co.
    		Ďuďa,R., et al., 1981: Mineralógia severnej časti Slanských vrchov. Min.Slovaca, Monografia 2, 98s
    Sweden
     
    • Värmland
      • Filipstad
        • Gåsborn
    		MinMag 52, 193
    Tajikistan
     
    • Viloyati Sogd (Viloyati Sughd; Viloyati Khodzhent; Viloyati Leninabad)
      • Zeravshan Range
        • Yagnob River
    		Sharygin, V.V., Sokol, E.V. and Belakovskii, D.I. (2009): Fayalite-sekaninaite paralava from the Ravat coal fire (central Tajikistan). Russian Geology and Geophysics 50, 703-721.
    USA
     
    • Maine
      • Franklin Co.
        • Upper Cupsuptic Township
    		Anderson, 1991. Maine Mineral Localities, 2nd ed.
    • New Hampshire
      • Merrimack Co.
    		Harvard Mineralogical Museum, no. 118875
    Mineral and/or Locality
    Search Google
     
    Copyright © Jolyon Ralph and Ida Chau 1993-2011. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
    Current server date and time: 21st Sep 2011 19:37:20
    Mineral and Locality Search
    Mineral:
    and/or Locality:
    Options
    Fade toolbar when not in focusFix toolbar to bottom of page
    Hide Social Media Links
    Slideshow frame delay seconds