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3½ - 4
Specific Gravity:
3.624 (Calculated)
Crystal System:
Named by H.G. Ansell, A.C. Roberts, A.G. Plant, and B.D. Sturman in 1980 in honor of John Gittins, Canadian petrologist and professor at the University of Toronto, Toronto, Ontario, Canada, who first noted its occurrence and reported it as an unidentified mineral.
Isostructural with:
This page provides mineralogical data about Gittinsite.

Hide all sections | Show all sections

Classification of GittinsiteHide

First Published:

9 : SILICATES (Germanates)
B : Sorosilicates
C : Si2O7 groups, without non-tetrahedral anions; cations in octahedral [6] and greater coordination

55 : SOROSILICATES Si2O7 Groups,Generally with no Additional Anions
2 : Si2O7 Groups, Generally with no Additional Anions with cations in [6] coordination

14 : Silicates not Containing Aluminum
10 : Silicates of Zr or Hf

Physical Properties of GittinsiteHide

Colorless in thin section
3½ - 4 on Mohs scale
3.624 g/cm3 (Calculated)

Optical Data of GittinsiteHide

Biaxial (-)
RI values:
nα = 1.720 nβ = 1.736 nγ = 1.738
Measured: 30° , Calculated: 38°
Max Birefringence:
δ = 0.018
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
relatively strong

Chemical Properties of GittinsiteHide


Crystallography of GittinsiteHide

Crystal System:
Cell Parameters:
a = 6.87 Å, b = 8.76 Å, c = 4.69 Å
β = 101.74°
a:b:c = 0.784 : 1 : 0.535
Unit Cell V:
276.35 ų (Calculated from Unit Cell)

Type Occurrence of GittinsiteHide

General Appearance of Type Material:
Fibrous to radiating masses intimately associated with apophyllite.
Place of Conservation of Type Material:
Canadian Geological Survey, Ottawa, 19558.
University of Toronto, Toronto.
Royal Ontario Museum, Toronto, Canada, M37321.
Harvard University, Cambridge, Massachusetts, 117030, 117031.
National Museum of Natural History, Washington, D.C., USA, 147002.
Geological Setting of Type Material:
Pegmatitic lenses in a regionally metamomhosed agpaitic syenite complex.
Associated Minerals at Type Locality:

Synonyms of GittinsiteHide

Other Language Names for GittinsiteHide

Relationship of Gittinsite to other SpeciesHide

Structurally related to group(s):

Common AssociatesHide

Associated Minerals Based on Photo Data:
Eudialyte45 photos of Gittinsite associated with Eudialyte on
Vlasovite41 photos of Gittinsite associated with Vlasovite on
Albite18 photos of Gittinsite associated with Albite on
Agrellite12 photos of Gittinsite associated with Agrellite on
Katophorite9 photos of Gittinsite associated with Katophorite on
Zircon4 photos of Gittinsite associated with Zircon on
Nepheline4 photos of Gittinsite associated with Nepheline on
Mosandrite-(Ce)3 photos of Gittinsite associated with Mosandrite-(Ce) on
Richterite3 photos of Gittinsite associated with Richterite on
Fluornatropyrochlore2 photos of Gittinsite associated with Fluornatropyrochlore on

Related Minerals - Nickel-Strunz GroupingHide

9.BC.05Keiviite-(Yb)Yb2Si2O7Mon. 2/m : B2/m
9.BC.10Keldyshite(Na,H)2ZrSi2O7Tric. 1 : P1
9.BC.15RankiniteCa3Si2O7Mon. 2/m : P21/b
9.BC.30KristianseniteCa2ScSn(Si2O7)(Si2O6OH)Tric. 1
9.BC.35Percleveite-(Ce)(Ce,La,Nd)2Si2O7Tet. 4

Related Minerals - Dana Grouping (8th Ed.)Hide

55.2.1a.3Keiviite-(Yb)Yb2Si2O7Mon. 2/m : B2/m

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

14.10.1ZirconZr(SiO4)Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
14.10.2HafnonHfSiO4Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
14.10.5VlasoviteNa2ZrSi4O11Mon. 2/m : B2/b
14.10.6Keldyshite(Na,H)2ZrSi2O7Tric. 1 : P1
14.10.7GaidonnayiteNa2Zr(Si3O9) · 2H2OOrth. mmm (2/m 2/m 2/m) : Pmna
14.10.8TerskiteNa4ZrSi6O16 · 2H2OOrth.
14.10.9ElpiditeNa2ZrSi6O15 · 3H2OOrth.
14.10.10HilairiteNa2Zr[SiO3]3 · 3H2OTrig.
14.10.11PetarasiteNa5Zr2(Si6O18)(Cl,OH) · 2H2OMon. 2/m : P21/m
14.10.15KostyleviteK2Zr(Si3O9) · H2OMon.
14.10.16UmbiteK2(Zr,Ti)Si3O9 · H2OOrth.
14.10.17ParaumbiteK3Zr2H(Si3O9)2 · nH2OOrth.
14.10.18GeorgechaoiteNaKZr[Si3O9] · 2H2OOrth. mm2
14.10.20CalciocatapleiiteCaZr(Si3O9) · 2H2O
14.10.21CalciohilairiteCaZr[SiO3]3 · 3H2OTrig.
14.10.22ArmstrongiteCaZr[Si6O15] · 3H2OMon.
14.10.23Lemoynite(Na,K)2CaZr2Si10O26 · 5H2OMon. 2/m : B2/b
14.10.24CatapleiiteNa2Zr(Si3O9) · 2H2OMon.
14.10.26LovozeriteNa2Ca(Zr,Ti)(Si6O12)[(OH)4O2] · H2OMon.
14.10.27Låvenite(Na,Ca)2(Mn2+,Fe2+)(Zr,Ti)(Si2O7)(O,OH,F)2Mon. 2/m : P21/b
14.10.28PenkvilksiteNa4Ti2Si8O22 · 4H2OOrth. mmm (2/m 2/m 2/m) : Pbcn
14.10.29DarapiositeK(Na,◻,K)2(Li,Zn,Fe)3(Mn,Zr,Y)2[Si12O30]Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
14.10.31KomkoviteBaZr[Si3O9] · 3H2OTrig.

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 GittinsiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Ansell, H.G., Roberts, A.C., Plant, A.G., Sturman, B.D. (1980) Gittinsite, a new calcium zirconium silicate from the Kipawa agpaitic syenite complex. Canadian Mineralogist: 18: 201-203.
Fleischer, M., Cabri, L.J. (1981) New mineral names. American Mineralogist: 66: 1274-1280.
Roelofsen-Ahl, J.N., Peterson, R.C. (1989) Gittinsite: a modification of the thortveitite structure. Canadian Mineralogist: 27: 703-708.

Internet Links for GittinsiteHide

Localities for GittinsiteHide

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.
  • Northwest Territories
    • Mackenzie District
      • Blachford Lake alkaline complex
        • Thor Lake syenite complex
Sheard, E.R. (2010); SHEARD, E.R., WILLIAMS-JONES, A.E., HEILIGMANN, M., PEDERSON, C. AND TRUEMAN, D.L. (2012) Controls on the concentration of zirconium, niobium, and the rare earth elements in the Thor Lake rare metal deposit, Northwest Territories, Canada. Economic Geology, 107(1), 81-104.
  • Québec
    • Abitibi-Témiscamingue
      • Témiscamingue RCM
        • Les Lacs-du-Témiscamingue
ANSELL, H.G., ROBERTS, A.C., PLANT, A.G. & STURMAN, B.D. (1980): Gittinsite, a new calcium zirconium silicate from the Kipawa agpaitic syenite complex.. Canadian Mineralogist 18, 201-203.
  • Québec & Newfoundland and Labrador
Canadian Mineralogist Vol. 34, pp.349-371 (1996); A. Kerr and H. Rafuse (2012) Rare-earth element (REE) geochemistry of the Strange Lake deposits: Implications for resource estimation and metallogenic models. Newfoundland and Labrador Department of Natural Resources Current Research 2012 pp39-60; BIRKETT, T.C., MILLER, R.R., ROBERTS, A.C., & MARIANO, A.N. (1992) Zirconium bearing minerals from the Strange Lake intrusive complex, Quebec Labrador. Canadian Mineralogist, 30, 191-205.
Czech Republic
  • Moravia (Mähren; Maehren)
    • Olomouc Region
      • Šumperk (Mährisch Schönberg)
        • Ruda nad Moravou
Novák M. Gadas P. (2010) ZONED, ANORTHITE- AND GROSSULARITE-BEARING, LEUCOTONALITIC PEGMATITE FROM SERPENTINIZED LHERZOLITE AT RUDA NAD MORAVOU, STARÉ MĚSTO UNIT, CZECH REPUBLIC. Can Miner 48 (3): 629-650.; Gadas, P., Novák, M., Talla, D., & Galiová, M. V. (2013). Compositional evolution of grossular garnet from leucotonalitic pegmatite at Ruda nad Moravou, Czech Republic; a complex EMPA, LA-ICP-MS, IR and CL study. Mineralogy and Petrology, 107(2), 311-326.
  • Kujalleq
    • Narsaq
      • Ilímaussaq complex
        • Kangerluarsuk Fjord (Kangerdluarssuq Fjord)
Borst, AM, Friis, H, Andersen, T, Nielsen, T, Waight, TE & Smit, MA (2016) Zirconosilicates in the kakortokites of the Ilímaussaq Complex, South Greenland: Implications for fluid evolution and high-field-strength and rare-earth element mineralization in agpaitic systems, Mineral Mag 80: 5-30.
  • Antsiranana Province
    • Diana Region (Northern Region)
      • Ambanja District
        • Ampasindava Peninsula
G. Estrade et al. (2011): HFSE enrichment in a peralkaline granite related skarn, Ampasindava Peninsula, Madagascar.- University of Toulouse, France; presentation given at the University of Tübingen.
  • Gobi Desert
Kynicky, J., Chakhmouradian, A.R., Xu, C., Krmicek & Galilova, M. (2011): Distribution aand evolution of zirconium mineralization in peralkaline granites and associated pegmatites of the Khan Bogd Complex, southern Mongolia. Canadian Mineralogist. 49, 947-965.
  • Hovd Aimag (Khovd Aimag)
    • Altai Mts
Tsareva G.M., Kartashov P.M., Dubrovinskyi L.S., Kovalenko V.I. (1993) Gittinsite from Western Mongolian rare-metal alkali granites, - Transactions (Doklady) Rus. Ac. Sci., earth sciene section, v.332, №7, p. 37-42 (Engl.); Andreeva, I. A. (2016). Genesis and mechanisms of formation of rare-metal peralkaline granites of the Khaldzan Buregtey massif, Mongolia: Evidence from melt inclusions. Petrology, 24(5), 462-476.
U. Kempe, J. Götze, S. Dandar and D. Habermann (1999) Magmatic and Metasomatic Processes During Formation of the Nb-Zr-REE Deposits Khaldzan Buregte and Tsakhir (Mongolian Altai): Indications from a Combined CL-SEM Study. Mineralogical Magazine 63:165-177.; Kovalenko, V. I., Tsaryeva, G. M., Goreglyad, A. V., Yarmolyuk, V. V., Troitsky, V. A., Hervig, R. L., & Farmer, G. (1995). The peralkaline granite-related Khaldzan-Buregtey rare metal (Zr, Nb, REE) deposit, western Mongolia. Economic Geology, 90(3), 530-547.
  • Northern Region
    • Murmanskaya Oblast'
Chakhmouradian A.R., Zaitsev A.N. (2002) Calcite–Amphibole–Clinopyroxene rock from the Afrikanda complex, Kola peninsula, Russia: mineralogy and a possible link to carbonatites. III. Silicate minerals. - Canadian Mineralogist, Vol.40, pp. 1347-1374. ; Wu, F. Y., Yang, Y. H., Mitchell, R. H., Bellatreccia, F., Li, Q. L., & Zhao, Z. F. (2010). In situ U–Pb and Nd–Hf–(Sr) isotopic investigations of zirconolite and calzirtite. Chemical Geology, 277(1), 178-195.
  • Alaska
    • Prince of Wales-Outer Ketchikan Borough
      • Ketchikan District
The Canadian Mineralogist Vol. 40, pp. 1347-1374 (2002)
  • New Mexico
    • Otero Co.
The Canadian Mineralogist Vol. 40, pp. 1347-1374 (2002)
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