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Ferro-glaucophane

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Formula:
◻Na2(Fe32+Al2)Si8O22(OH)2
System:
Monoclinic
Colour:
Grey to lavender-blue.
Lustre:
Vitreous
Hardness:
5 - 6
Name:
For its relationship to glaucophane.
This page provides mineralogical data about Ferro-glaucophane.


Classification of Ferro-glaucophane

Approved, 'Grandfathered' (first described prior to 1959)
9.DE.25

9 : SILICATES (Germanates)
D : Inosilicates
E : Inosilicates with 2-periodic double chains, Si4O11; Clinoamphiboles
16.18.2

16 : Silicates Containing Aluminum and other Metals
18 : Aluminosilicates of Fe and alkalis

Physical Properties of Ferro-glaucophane

Vitreous
Colour:
Grey to lavender-blue.
Streak:
Pale grey to bluish-grey.
Hardness (Mohs):
5 - 6

Optical Data of Ferro-glaucophane

Type:
Biaxial (-)
RI values:
nα = 1.641 nβ = 1.659 nγ = 1.662
2V:
Measured: 42° , Calculated: 44°
Max Birefringence:
δ = 0.021
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
relatively weak

Chemical Properties of Ferro-glaucophane

IMA Formula:
◻Na2(Fe32+Al2)Si8O22(OH)2
Mindat.org Formula:
◻[Na2][Fe32+Al2]Si8O22(OH)2

Ferro-glaucophane is defined as a member of the glaucophane group with Fe2+ >Mg in the C2+ position and (OH) in the W position.
Elements listed in formula:
Common Impurities:
Ti,Mn,Ca,K

Crystallography of Ferro-glaucophane

Crystal System:
Monoclinic
Cell Parameters:
a = 9.59 Å, b = 17.87 Å, c = 5.3 Å
β = 103.63°
Ratio:
a:b:c = 0.537 : 1 : 0.297
Unit Cell Volume:
V 882.70 ų (Calculated from Unit Cell)

Type Occurrence of Ferro-glaucophane

Relationship of Ferro-glaucophane to other Species

Other Members of Group:
Ferro-fluoro-glaucophane◻[Na2][Fe32+Al2]Si8O22F2
Fluoro-glaucophane◻[Na2][Mg3Al2]Si8O22F2
Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2
9.DE.05Anthophyllite◻Mg2Mg5Si8O22(OH)2
9.DE.05Cummingtonite◻Mg2Mg5Si8O22(OH)2
9.DE.05Clino-holmquistite Root Name☐{Li2}{Z32+Z23+}(Si8O22)(OH,F,Cl)2
9.DE.05Grunerite◻Fe22+Fe52+Si8O22(OH)2
9.DE.05Manganocummingtonite◻Mn2Mg5Si8O22(OH)2
9.DE.05Manganogrunerite◻Mn2Fe52+Si8O22(OH)2
9.DE.05Permanganogrunerite☐{Mn22+}{Mn52+}(Si8O22)(OH)2
9.DE.05Ferro-fluoro-pedrizite{Na}{Li2}{Fe2Al2Li}(Al2Si6O22)F2
9.DE.05Ferri-fluoro-leakeiteNaNa2(Mg2Fe23+Li)Si8O22F2
9.DE.10ActinoliteCa2(Mg4.5-2.5Fe2+0.5-2.5)Σ=5Si8O22(OH)2
9.DE.10Ferri-tschermakite☐{Ca2}{Mg3Fe23+}(Al2Si6O22)(OH)2
9.DE.10Ferro-actinolite◻Ca2Mg2.5-0Fe2+2.5-5Si8O22(OH)2
9.DE.10Ferro-hornblendeCa2Fe42+Al(Si7Al)O22(OH)2
9.DE.10Ferro-tschermakite☐{Ca2}{Fe32+Al2}(Al2Si6O22)(OH)2
9.DE.10JoesmithitePbCa2Mg3Fe23+(Si6Be2)O22(OH)2
9.DE.10Magnesio-hornblendeCa2(Mg4Al)(Si7Al)O22(OH)2
9.DE.10Tremolite◻Ca2Mg5Si8O22(OH)2
9.DE.10Tschermakite◻Ca2(Mg3Al2)(Si6Al2)O22(OH)2
9.DE.10CannilloiteCa(Ca2)(Mg4Al)(Al3Si5O22)(OH)2
9.DE.10Fluoro-cannilloiteCaCa2(Mg4Al)(Si5Al3)O22F2
9.DE.10Parvo-manganotremolite☐{CaMn2+}{Mg5}(Si8O22)(OH)2
9.DE.10Fluoro-tremolite◻Ca2Mg5Si8O22F2
9.DE.10Potassic-fluoro-pargasiteKCa2(Mg4Al)Si6Al2O22F2
9.DE.15EdeniteNaCa2Mg5(Si7Al)O22(OH)2
9.DE.15Ferro-edeniteNaCa2Fe52+(Si7Al)O22(OH)2
9.DE.15Ferro-kaersutite{Na}{Ca2}{Fe32+AlTi}(Al2Si6O22)O2
9.DE.15Ferro-pargasiteNaCa2(Fe42+Al)(Si6Al2)O22(OH)2
9.DE.15HastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2
9.DE.15KaersutiteNaCa2(Mg3Ti4+Al)(Si6Al2)O22O2
9.DE.15Magnesio-hastingsiteNaCa2(Mg4Fe3+)Si6Al2O22(OH)2
9.DE.15PargasiteNaCa2(Mg4Al)(Si6Al2)O22(OH)2
9.DE.15SadanagaiteNaCa2(Mg3Al2)(Si5Al3)O22(OH)2
9.DE.15Fluoro-edeniteNaCa2Mg5(Si7Al)O22F2
9.DE.15Potassic-ferro-ferri-sadanagaiteKCa2(Fe32+Fe23+)(Si5Al3)O22(OH)2
9.DE.15Potassic-sadanagaiteKCa2Mg3Al2(Si5Al3)O22(OH)2
9.DE.15Potassic-pargasiteKCa2(Mg4Al)(Si6Al2)O22(OH)2
9.DE.15Potassic-ferro-sadanagaiteKCa2(Fe32+Al2)(Si5Al3)O22(OH)2
9.DE.15Magnesio-fluoro-hastingsiteNaCa2(Mg4Fe3+)(Si6Al2)O22F2
9.DE.15Potassic-fluoro-hastingsiteKCa2(Fe42+Fe3+)(Si6Al2)O22F2
9.DE.15Potassic-chloro-hastingsiteKCa2[Fe42+Fe3+](Si6Al2)O22Cl2
9.DE.15Fluoro-pargasiteNaCa2(Mg4Al)(Si6Al2)O22F2
9.DE.15Parvo-mangano-edenite{Na}{CaMn2+}{Mg5}(AlSi7O22)(OH)2
9.DE.15Potassic-chloro-pargasiteKCa2(Mg4Al)(Si6Al2)O22Cl2
9.DE.15Potassic-ferro-chloro-edenite{K}{Ca2}{Fe52+}(AlSi7O22)(Cl,OH)2
9.DE.15Potassic-magnesio-hastingsiteKCa2(Mg4Fe3+)(Si6Al2)O22(OH)2
9.DE.15Potassic-ferro-pargasiteKCa2(Fe42+Al)Si6Al2O22(OH)2
9.DE.15Chromio-pargasiteNaCa2(Mg4Cr)(Si6Al2)O22(OH)2
9.DE.20Ferro-taramiteNa(NaCa)Fe32+Al2(Si6Al2)O22(OH)2
9.DE.20Barroisite◻NaCa[Mg3Al2](Si7Al)O22(OH)2
9.DE.20Ferro-ferri-barroisite☐(CaNa)(Fe32+Fe23+)(AlSi7O22)(OH)2
9.DE.20Ferro-ferri-winchite☐[CaNa][Fe42+(Fe3+,Al)]Si8O22(OH)2
9.DE.20Ferri-barroisite☐(CaNa)(Mg3Fe23+)(AlSi7O22)(OH)2
9.DE.20Ferro-ferri-taramiteNa(CaNa)(Fe32+Fe23+)(Al2Si6O22)(OH)2
9.DE.20Ferro-ferri-katophoriteNa(NaCa)(Fe42+Fe3+)(Si7Al)O22(OH)2
9.DE.20Ferro-barroisite☐{CaNa}{Fe32+Al2}(AlSi7O22)(OH)2
9.DE.20Ferro-richteriteNa2CaFe52+Si8O22(OH)2
9.DE.20Ferro-winchite ☐{CaNa}{Fe42+Al}(Si8O22)(OH)2
9.DE.20Ferro-katophoriteNa2CaFe42+Al(Si7Al)O22(OH)2
9.DE.20Ferri-taramiteNa(CaNa)(Mg3Fe23+)(Al2Si6O22)(OH)2
9.DE.20Magnesiotaramite{Na}{CaNa}{Mg3AlFe3+}(Al2Si6O22)(OH)2
9.DE.20RichteriteNa2CaMg5Si8O22(OH)2
9.DE.20WinchiteNaCa(Mg4Al)Si8O22(OH)2
9.DE.20TaramiteNa2CaMg3Al2(Si6Al2)O22(OH)2
9.DE.20Fluoro-richteriteNa(NaCa)Mg5Si8O22F2
9.DE.20KatophoriteNaNaCa(Mg4Al)(Si7Al)O22(OH)2
9.DE.20Potassic-fluoro-richteriteK(NaCa)Mg5Si8O22F2
9.DE.20Potassic-richteriteK[CaNa][Mg5]Si8O22(OH)2
9.DE.20Ferri-ghoseite◻(NaMn2+)(Mg4Fe3+)Si8O22(OH)2
9.DE.20Ferri-winchite◻NaCa(Mg4Fe3+)Si8O22(OH)2
9.DE.20Fluoro-taramiteNa(NaCa)(Mg3Al2)(Si6Al2)O22F2
9.DE.25ArfvedsoniteNaNa2(Fe42+Fe3+)Si8O22(OH)2
9.DE.25EckermanniteNaNa2(Mg4Al)Si8O22(OH)2
9.DE.25Ferro-eckermanniteNaNa2(Fe42+Al)Si8O22(OH)2
9.DE.25Glaucophane◻Na2(Mg3Al2)Si8O22(OH)2
9.DE.25Potassic-mangani-leakeiteKNa2(Mg2Mn23+Li)Si8O22(OH)2
9.DE.25Mangano-ferri-eckermanniteNaNa2(Mn42+Fe3+)Si8O22(OH)2
9.DE.25Ferri-leakeiteNa(NaLi)(Mg2Fe23+Li)Si8O22(OH)2
9.DE.25Magnesio-riebeckite◻Na2(Mg3Fe23+)Si8O22(OH)2
9.DE.25Magnesio-arfvedsoniteNaNa2(Mg4Fe3+)Si8O22(OH)2
9.DE.25NybøiteNaNa2(Mg3Al2)(Si7Al)O22(OH)2
9.DE.25Riebeckite◻Na2(Fe32+Fe23+)Si8O22(OH)2
9.DE.25Mangano-mangani-ungarettiiteNaNa2(Mn22+Mn33+)Si8O22O2
9.DE.25Ferro-ferri-nybøiteNaNa2(Fe32+Fe23+)(Si7Al)O22(OH)2
9.DE.25Clino-ferro-ferri-holmquistite◻Li2(Fe32+Fe23+)Si8O22(OH)2
9.DE.25Ferri-nybøiteNaNa2(Mg3Fe23+](AlSi7O22)(OH)2
9.DE.25Ferro-ferri-leakeite[Na][Na2][Fe22+Fe23+Li]Si8O22(OH)2
9.DE.25Ferro-ferri-fluoro-leakeiteNaNa2(Fe22+Fe23+Li)Si8O22F2
9.DE.25Sodic-ferri-clinoferroholmquistiteNa0.5{Li2}{Fe32+Fe23+}(Si8O22)(OH)2
9.DE.25Magnesio-fluoro-arfvedsoniteNaNa2(Mg4Fe3+)Si8O22F2
9.DE.25Ferri-pedrizite[Na][Li2][Mg2Fe23+Li]Si8O22(OH)2
9.DE.25Potassic-ferri-leakeiteKNa2Mg2Fe23+LiSi8O22(OH)2
9.DE.25Fluoro-nybøiteNaNa2(Mg3Al2)(Si7Al)O22F2
9.DE.25Mangani-dellaventuraiteNaNa2(MgMn23+LiTi4+)Si8O22O2
9.DE.25Fluoro-pedriziteNaLi2(Mg2Al2Li)(Si8O22)F2
9.DE.25Potassic-arfvedsoniteKNa2Fe42+Fe3+Si8O22(OH)2
9.DE.25Mangani-obertiiteNaNa2(Mg3Mn3+Ti4+)Si8O22O2
9.DE.25Potassic-magnesio-fluoro-arfvedsoniteKNa2(Mg4Fe3+)Si8O22F2
9.DE.25Ferro-ferri-pedriziteNaLi2(LiFe22+Fe23+)Si8O22(OH)2
9.DE.25Potassic-magnesio-arfvedsoniteKNa2Mg4Fe3+Si8O22(OH)2
9.DE.25PedriziteNaLi2(LiMg2Al2)(Si8O22)(OH)2
9.DE.25Ferro-pedriziteNaLi2(Fe22+Al2Li)Si8O22(OH)2
9.DE.25Fluoro-leakeiteNaNa2(Mg2Al2Li)Si8O22F2
9.DE.25Ferro-ferri-obertiiteNaNa2(Fe32+Fe3+Ti)Si8O22O2
16.18.1NontroniteNa0.3Fe23+(Si,Al)4O10(OH)2 · nH2O
16.18.3TuhualiteNaFe2+Fe3+Si6O15
16.18.4AnniteKFe32+AlSi3O10(OH)2
16.18.5SiderophylliteKFe22+Al(Si2Al2)O10(OH)2

Other Names for Ferro-glaucophane

Name in Other Languages:

Other Information

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

Ferro-glaucophane in petrology

Common component of (items highlighted in red)

References for Ferro-glaucophane

Reference List:
Mandarino, J.A. (1998) The Second List of Additions and Corrections to the Glossary of Mineral Species (1995). The Amphibole Group. Mineralogical Record: 29: 169-174.

Hawthorne, F.C., Oberti, R. (2006) On the classification of amphiboles. The Canadian Mineralogist: 44: 1-21.

Hawthorne, F.C., Oberti, R., Harlow, G.E., Maresch, W.V., Martin, R.F., Schumacher, J.C., Welch, M.D. (2012) Nomenclature of the amphibole supergroup. American Mineralogist: 97: 2031-2048.

Internet Links for Ferro-glaucophane

mindat.org URL:
https://www.mindat.org/min-1516.html
Please feel free to link to this page.

Localities for Ferro-glaucophane

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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.
China
 
  • Tibet Autonomous Region
    • Ngari Prefecture
      • Gêrzê Co. (Gaize Co.)
Kapp, P., Yin, A., Manning, C.E., Murphy, M., Harrison, T.M., Spurlin, M., Lin, D., Xiguang, D., and Cunming, W. (2000): Geology 28(1), 19-22.
  • Xinjiang Autonomous Region
    • Yili Hasake Autonomous Prefecture (Ili Kazakh Autonomous Prefecture)
Gao Jiu, Klemd, R., Zhang Lifei, Wang Su, and Xiao Xiong (1999): Journal of Metamorphic Geology 17(6), 621-636.
France
 
  • Brittany
    • Morbihan
  • Provence-Alpes-Côte d'Azur
    • Hautes-Alpes
      • Saint-Véran area
TUDURI Johan (2001) Minéralisations cuprifères syn-orogéniques dans les schistes lustrés des Alpes occidentales. Exemple de la mine de cuivre des Clausis (Saint-Véran, France)
Greece
 
  • Aegean Islands Department (Aiyaíon)
    • Kykládes Prefecture
      • Cyclade Islands (Cyclades; Kikladhes; Nomos Kikladhon)
        • Sifnos Island
Eur. J. Mineral. , 1992, 4, pp. 619-634.
VALAAS, E. P. THE PETROLOGY OF MAFIC SCHISTS OF SOUTHERN SYROS, GREECE.
  • South Aegean Department
    • Dodekánisos Prefecture (Dodekánissa)
      • Dodecanese Islands
        • Arki Island (Arkioi)
Eur. J. Mineral. , 1992, 4, pp. 527-537.
  • Sterea Hellas Department
    • Évvoia Prefecture
P. Xypolias, I. Iliopoulos,V. Chatzaras, and S. Kokkalas, (2012): Subduction- and exhumation-related structures in the Cycladic Blueschists: Insights from south Evia Island (Aegean region, Greece). TECTONICS, VOL. 31, TC2006
Guatemala
 
  • Motagua Valley
Am. Miner., V. 90, pp. 836-842, 2005.
Hungary
 
  • Borsod-Abaúj-Zemplén Co.
    • Aggteleki Mts
www.minerals- of-the- carpathians.eu (Editor:Szakáll)
  • Vas Co.
    • Vas Hill
      • Vaskeresztes
HOM Collection,Miskolc
Italy (TL)
 
  • Aosta Valley
    • Champdepraz
Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007): Minerali del Piemonte e della Valle d'Aosta, Amici del Museo "F. Eusebio" di Alba, Ed., Alba (Cuneo), 617 pp.
  • Piedmont
    • Torino Province
      • Canavese District
        • Malone Valley
Eur. J. Mineral. , 1989, 1, pp. 89-104.
Eur. J. Mineral (1989): 1: 89-104.
          • Rocca Canavese
Eur. J. Mineral (1989): 1: 89-104.
Eur. J. Mineral. , 1989, 1, pp. 89-104.
      • Lanzo Valleys
Eur. J. Mineral. , 1989, 1, pp. 89-104.
Eur. J. Mineral. , 1989, 1, pp. 89-104.
      • Susa Valley
        • Cesana Torinese
Brizio, P., Ambrino, P., Ciriotti, M.E., Blass, G. (2010). L'affioramento a Mn, SiO, Fe, S di Roccia Rossa, Cesana, Torino. Micro (località) 1/2010, 313-328
        • Oulx
Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007). Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" Alba, Ed., Alba (Cuneo) 607 pp.
Japan
 
  • Honshu Island
    • Kanto Region
      • Saitama Prefecture
        • Yorii
Alfredo Petrov collection
New Caledonia
AmMin 55:508
  • Northern Province
Clarke, G. L., Aitchison, J. C., & Cluzel, D. (1997). Eclogites and blueschists of the Pam Peninsula, NE New Caledonia: a reappraisal. Journal of Petrology, 38(7), 843-876.
Oman
 
  • Muscat Province (Masqat Province)
    • Saih Hatat
El-Shazly,A. K., Worthing, M. A., and Liou J. G. (1997): Interlayered Eclogites, Blueschists and Epidote Amphibolites from NE Oman: a Record of Protolith Compositional Control and Limited Fluid Infiltration. Journal of Petrology, Vol 38, No 11, pp 1461-1487.
Sweden
 
  • Småland
    • Jönköping
      • Gränna
Thulin, H. (1996): Norra Kärr. Litiofilen 13: 17-51
Turkey
 
  • Marmara Region
    • Bursa Province
      • Tavşanlı Zone
Okay, A.I. (2002): Journal of Metamorphic Geology 20, 757-768.
USA
 
  • California
    • Mendocino Co.
      • Coastal Range
        • Longvale
          • North of Longvale
Gunnar Farber
Mineral and/or Locality  
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