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Gillespite

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05234410015818627398656.jpg
Gillespite, etc.

Madrelena Mine, Tres Pozos, Baja California, Mexico
07735860014947414459686.jpg
Gillespite

El Rosario, Ensenada Municipality, Baja California, Mexico
00110480014946346286413.jpg
Gillespite

El Rosario, Ensenada Municipality, Baja California, Mexico
02197480014979121679884.jpg
Gillespite, etc.

Madrelena Mine, Tres Pozos, Baja California, Mexico
07735860014947414459686.jpg
Gillespite

El Rosario, Ensenada Municipality, Baja California, Mexico
00110480014946346286413.jpg
Gillespite

El Rosario, Ensenada Municipality, Baja California, Mexico
02197480014979121679884.jpg
Gillespite, etc.

Madrelena Mine, Tres Pozos, Baja California, Mexico
07735860014947414459686.jpg
Gillespite

El Rosario, Ensenada Municipality, Baja California, Mexico
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About GillespiteHide

Formula:
BaFe2+Si4O10
Hardness:
4
Crystal System:
Tetragonal
Name:
Named in 1922 by Waldemar T. Schaller in honor of Mr. Frank Gillespie of Richardson, Alaska who collected the type specimen from a moraine near a claim he had staked.
This page provides mineralogical data about Gillespite.


Classification of GillespiteHide

IMA status:
Approved, 'Grandfathered' (first described prior to 1959)
Strunz 8th ed.:
8/H.02-40
Nickel-Strunz 10th (pending) ed.:
9.EA.05

9 : SILICATES (Germanates)
E : Phyllosilicates
A : Single nets of tetrahedra with 4-, 5-, (6-), and 8-membered rings
Dana 8th ed.:
71.2.3.2

71 : PHYLLOSILICATES Sheets of Six-Membered Rings
2 : Sheets of 6-membered rings with 2:1 layers
Hey's CIM Ref.:
14.7.7

14 : Silicates not Containing Aluminum
7 : Silicates of Ba, Sr and Zn

Pronounciation of GillespiteHide

Pronounciation:
PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Physical Properties of GillespiteHide

Hardness:
4 on Mohs scale

Optical Data of GillespiteHide

Type:
Uniaxial (-)
RI values:
nω = 1.621 nε = 1.619
Max Birefringence:
δ = 0.002
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate

Chemical Properties of GillespiteHide

Formula:
BaFe2+Si4O10
Elements listed:
Ba, Fe, O, Si - search for minerals with similar chemistry
Common Impurities:
Al,Mn

Crystallography of GillespiteHide

Crystal System:
Tetragonal
Cell Parameters:
a = 7.49 Å, c = 16.05 Å
Ratio:
a:c = 1 : 2.143
Unit Cell V:
900.41 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Image Loading

Radiation - Copper Kα
Data Set:
Data courtesy of RRUFF project at University of Arizona, used with permission.

Type Occurrence of GillespiteHide

Other Language Names for GillespiteHide

Relationship of Gillespite to other SpeciesHide

Member of:
Gillespite Group
Other Members of this group:
CuprorivaiteCaCuSi4O10Tet. 4/mmm (4/m 2/m 2/m) : P4/ncc
EffenbergeriteBaCuSi4O10Tet. 4/mmm (4/m 2/m 2/m) : P4/ncc
WesselsiteSrCuSi4O10Tet.

Common AssociatesHide

Associated Minerals Based on Photo Data:
43 photos of Gillespite associated with SanborniteBa2(Si4O10)
5 photos of Gillespite associated with CelsianBa(Al2Si2O8)
4 photos of Gillespite associated with PellyiteBa2Ca(Fe,Mg)2Si6O17
3 photos of Gillespite associated with TaramelliteBa4(Fe3+,Ti,Fe2+,Mg)4(B2Si8O27)O2Clx
3 photos of Gillespite associated with TitantaramelliteBa4(Ti,Fe3+,Fe2+,Mg)4(B2Si8O27)O2Clx
3 photos of Gillespite associated with QuartzSiO2
2 photos of Gillespite associated with AlforsiteBa5(PO4)3Cl
2 photos of Gillespite associated with SulphurS8
1 photo of Gillespite associated with Anandite(Ba,K)(Fe2+,Mg)3((Si,Al,Fe)4O10)(S,OH)2

Related Minerals - Nickel-Strunz GroupingHide

9.EA.Bussyite-(Y)(Y,REE,Ca)3(Na,Ca)6MnSi9Be5(O,OH,F)34Mon. 2 : B2
9.EA.05CuprorivaiteCaCuSi4O10Tet. 4/mmm (4/m 2/m 2/m) : P4/ncc
9.EA.05EffenbergeriteBaCuSi4O10Tet. 4/mmm (4/m 2/m 2/m) : P4/ncc
9.EA.05WesselsiteSrCuSi4O10Tet.
9.EA.10EkaniteCa2ThSi8O20Tet. 4 2 2 : I4 2 2
9.EA.15Fluorapophyllite-(K)KCa4(Si8O20)(F,OH) · 8H2OTet. 4/mmm (4/m 2/m 2/m) : P4/mnc
9.EA.15Hydroxyapophyllite-(K)KCa4(Si8O20)(OH,F) · 8H2OTet.
9.EA.15Fluorapophyllite-(Na)NaCa4(Si8O20)F · 8H2OOrth.
9.EA.20MagadiiteNa2Si14O29 · 11H2OMon.
9.EA.25DalyiteK2ZrSi6O15Tric.
9.EA.25DavaniteK2TiSi6O15Tric.
9.EA.30Sazhinite-(Ce)Na2CeSi6O14•6H2OOrth. mm2 : Pmm2
9.EA.30Sazhinite-(La)Na3La[Si6O15] · 2H2OOrth. mm2 : Pmm2
9.EA.35ArmstrongiteCaZr[Si6O15] · 3H2OMon.
9.EA.40OkeniteCa10Si18O46 · 18H2OTric. 1 : P1
9.EA.45NekoiteCa3Si6O15·7H2OTric. 1 : P1
9.EA.50CavansiteCa(VO)Si4O10 · 4H2OOrth. mmm (2/m 2/m 2/m)
9.EA.55PentagoniteCa(VO)Si4O10 · 4H2OOrth. mm2
9.EA.60PenkvilksiteNa4Ti2Si8O22 · 4H2OOrth. mmm (2/m 2/m 2/m) : Pbcn
9.EA.60TumchaiteNa2Zr(Si4O11) · 2H2OMon.
9.EA.65NabesiteNa2BeSi4O10 · 4H2OOrth. 2 2 2 : P21 21 21
9.EA.70Ajoite(K,Na)Cu7AlSi9O24(OH)6 · 3H2OTric.
9.EA.75ZeravshaniteNa2Cs4Zr3[Si18O45]*2H2OMon. 2/m : B2/b
9.EA.80Bussyite-(Ce)(Ce,REE)3(Na,H2O)6MnSi9Be5(O,OH)30F4Mon. 2/m : B2/b
9.EA.85PlumbophyllitePb2Si4O10 · H2OOrth. mmm (2/m 2/m 2/m) : Pbcn

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

71.2.3.1CuprorivaiteCaCuSi4O10Tet. 4/mmm (4/m 2/m 2/m) : P4/ncc
71.2.3.3EffenbergeriteBaCuSi4O10Tet. 4/mmm (4/m 2/m 2/m) : P4/ncc
71.2.3.4ChromphylliteK(Cr,Al)2(AlSi3O10)(OH,F)2Mon. 2/m : B2/b

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

14.7.1SanborniteBa2(Si4O10)Orth.
14.7.2KrauskopfiteBaSi2O5 · 3H2OMon.
14.7.3WalstromiteBaCa2(Si3O9)Tric.
14.7.4MacdonalditeBaCa4Si16O36(OH)2 · 10H2OOrth.
14.7.5EricssoniteBaMn2+2Fe3+(Si2O7)O(OH)Mon. 2/m : B2/m
14.7.6Ericssonite-2OBaMn2+2Fe3+(Si2O7)O(OH)Orth.
14.7.8AndrémeyeriteBaFe2+2(Si2O7)Mon.
14.7.9PellyiteBa2Ca(Fe,Mg)2Si6O17Orth.
14.7.10TaikaniteSr3BaMn2+2(Si4O12)O2Mon.
14.7.11WillemiteZn2SiO4Trig. 3 : R3
14.7.12HemimorphiteZn4Si2O7(OH)2 · H2OOrth. mm2 : Imm2
14.7.13ZincsiliteZn3(Si4O10)(OH)2 · 4H2OMon.
14.7.14HardystoniteCa2Zn(Si2O7)Tet. 4 2m : P4 21m
14.7.15PetedunniteCa(Zn,Mn2+,Mg,Fe2+)Si2O6Mon.
14.7.16ClinohedriteCaZn(SiO4) · H2OMon. m : Bb
14.7.17JunitoiteCaZn2Si2O7 · H2OOrth. mm2
14.7.18LarsenitePbZnSiO4Orth. mm2 : Pna21
14.7.19EsperitePbCa2Zn3(SiO4)3Mon. 2/m : P21/b
14.7.20HodgkinsoniteMn2+Zn2(SiO4)(OH)2Mon.
14.7.21GerstmanniteMnMgZn(SiO4)(OH)2Orth.
14.7.22GageiteMn21(Si4O12)2O3(OH)20Mon. 2/m
14.7.23FranklinfurnaceiteCa2Fe3+Mn2+3Mn3+(Zn2Si2O10)(OH)8Mon. 2 : B2

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 GillespiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Schaller, W.T. (1922) Gillespite, a new mineral. Journal of the Washington Academy of Sciences: 12: 7-8.
Schaller, W.T. (1929) The properties and associated minerals of gillespite. American Mineralogist: 14: 319-322.
Pabst, Adolf (1942), The unit cell and space group of gillespite: Am. Min.: 28: 372-390; …(abstract): American Mineralogist: 26: 199 (1941).
Pabst, Adolf (1958), The structure of leached gillespite: American Mineralogist: 43: 970-980.
Hazen, R.M. & C.W. Burnham (1974), The crystal structure of gillespite I and II: a structure determination at high pressure: American Mineralogist: 59: 1166-1174.
Hazen, R.M. (1977), Mechanisms of transformation and twinning in gillespite at high pressure: American Mineralogist: 62: 528-533.

Internet Links for GillespiteHide

Localities for GillespiteHide

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.
Canada
 
  • Yukon
    • Watson Lake mining district
      • Itsi Mountain
        • Wilson Lake
Canadian Mineralogist:11:444; Canadian Mineralogist22:653-658; Alfors, J.T. & Pabst, A. (1984): Titanian taramellites in western North America, American Mineralogist, 69, 358-373.; Dunning, G. E., Walstrom, R. E., & Lechner, W. (2018) Barium Silicate Mineralogy of the Western Margin, North American Continent, Part Geology, Origin, Paragenesis and Mineral Distribution from Baja California Norte, Mexico, Western Canada and Alaska, USA. Baymin Journal, Vol. 19, No. 5
      • Macmillan Pass
Dunning, G. E., Walstrom, R. E., & Lechner, W. (2018) Barium Silicate Mineralogy of the Western Margin, North American Continent, Part Geology, Origin, Paragenesis and Mineral Distribution from Baja California Norte, Mexico, Western Canada and Alaska, USA. Baymin Journal, Vol. 19, No. 5
Mexico
 
  • Baja California
    • Ensenada Municipality
      • 62 kilometers southeast of Ensenada
        • near El Alamo
Dunning et al. (2018)
No reference listed
    • Tres Pozos
American Mineralogist, Volume 69, pages 358-373, 1984; Dunning, G. E., Walstrom, R. E., & Lechner, W. (2018) Barium Silicate Mineralogy of the Western Margin, North American Continent, Part Geology, Origin, Paragenesis and Mineral Distribution from Baja California Norte, Mexico, Western Canada and Alaska, USA. Baymin Journal, Vol. 19, No. 5
USA (TL)
 
  • Alaska
    • Yukon-Koyukuk Census Area
      • Alaska Range
J.Washington Acad.Sci.(1922) 12, 7-8; Amer. Mineral (1929) 14:319-322
  • California
    • Fresno Co.
      • Big Creek-Rush Creek Mining District
        • Rush Creek deposit
Anonymous (1963), Core drilling at Rush Creek completed: California Division Mines, Mineral Information Service: 16(1): 11; Stinson, Melvin Clarence & J.T. Alfors (1964), New minerals from Fresno County – I: California Division Mines & Geology Mineral Information Service.: 17: 235-238; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 359, 381.
Mineralogical Record (2002): 33: 161.; Canadian Mineralogist (2001): 39:1053-1058.; Kampf, A.R., Rossman, G.R., Steele, I.M., Pluth, J.J., Dunning, G.E., Walstrom, R.E. (2010): Devitoite, a new heterophyllosilicate with astrophyllite-like layers from eastern Fresno County, California. The Canadian Mineralogist: 48: 29-40.
Bob Walstrom, p.c.
          • Rush Creek
Robert E. Walstrom Collection
    • Mariposa Co.
      • East Belt
        • Clearing House Mining District
          • Clearing House
            • Trumbull Peak
Rogers, A.F. (1932) Sanbornite, a new barium silicate mineral from Maricopa County, California. American Mineralogist: 17: 171.; Murdoch, J. and Webb, R.W. (1966) Minerals of California, Centennial Volume (1866-1966). California Division Mines & Geology Bulletin 189: 359, 385.; American Mineralogist (1981) 66: 1050-1053.; Canadian Mineralogist (1984) 22: 653-658.; Dunning, G.E. and Cooper, J.F. (1999) Barium silicate minerals from Trumbull Peak, Mariposa County, California. Mineralogical Record: 30(6): 411-417.; Jambor, J.L. and Roberts, A.C. (2002) New mineral names. American Mineralogist: 87: 765-768.
    • Tulare Co.
      • Dumtah
Pabst, Adolf (1978) Zur morphologie des taramellits. Tschermaks Mineralogische und Petrographische Mitteilungen: 25: 248; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 464, 466.
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