Help mindat.org|Log In|Register|
Home PageMindat NewsThe Mindat ManualHistory of MindatCopyright StatusManagement TeamContact UsAdvertise on Mindat
Donate to MindatSponsor a PageSponsored PagesTop Available PagesMindat AdvertisersAdvertise on MindatThe Mindat Store
Minerals by PropertiesMinerals by ChemistryRandom MineralSearch by minIDLocalities Near MeSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportAdd Glossary Item
StatisticsMember ListBooks & MagazinesMineral Shows & EventsThe Mindat DirectoryHow to Link to MindatDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Gageite

This page is currently not sponsored. Click here to sponsor this page.
Formula:
Mn21(Si4O12)2O3(OH)20
System:
Monoclinic
Colour:
Uaually brownish purple, ...
Hardness:
3
Name:
Named in 1910 by Alexander Hamilton Phillips in honor of Robert Burns Gage [November 20, 1875 Kaneville, Venango County, Pennsylvania, USA - 1946], of Trenton, New Jersey, USA, chemist with the New Jersey Highway Department. Gage analyzed the first specimens of gageite. Gage named chlorophoenicite and schallerite.
Two polytypes are known, gageite-1A and gageite-2M and are often present in the same "crystal".

Classification of Gageite

Approved
9.DH.35

9 : SILICATES (Germanates)
D : Inosilicates
H : Inosilicates with 4-periodic single chains, Si4O12
14.7.22

14 : Silicates not Containing Aluminum
7 : Silicates of Ba, Sr and Zn
mindat.org URL:
http://www.mindat.org/min-1631.html
Please feel free to link to this page.

Type Occurrence of Gageite

Place of Conservation of Type Material:
National Museum of Natural History, Smithsonian Institution, Washington, D.C., USA (R6444, 86845).
Year of Discovery:
1910
Geological Setting of Type Material:
In veins and solution cavities traversing massive ore in a metamorphosed stratiform Precambrian Zn-Fe-Mn orebody.

Physical Properties of Gageite

Vitreous, Sub-Vitreous
Diaphaneity (Transparency):
Transparent, Translucent
Colour:
Uaually brownish purple, brown, pinkish brown, light pink, light brown, , also colorless in small crystals
Hardness (Mohs):
3
Tenacity:
Brittle
Cleavage:
Distinct/Good
On {110}
Density:
3.46 - 3.584 g/cm3 (Measured)    3.599 g/cm3 (Calculated)

Crystallography of Gageite

Polytype:
Formula:
Crystal System:
Class (H-M)
Space Group:
Space Group Setting:
Cell Parameters:
Ratio:
Unit Cell Volume (calc):
Z:
Gageite-1AGageite-2M
 (Mn,Mg,Zn)42Si16O54(OH)40
 Monoclinic 
  
  


  
  
  
X-Ray Powder Diffraction Data:
d-spacingIntensity
6.87 (100)
2.758 (80)
2.707 (80)
3.44 (60)
3.25 (60)
2.556 (60)
1.6742 (60)
Comments:
On Franklin, NJ, material.

Optical Data of Gageite

Type:
Biaxial (-)
RI values:
nα = 1.723 nβ = 1.734 nγ = 1.736
Birefringence:
0.013
Max Birefringence:
δ = 0.013
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
High
Dispersion:
r > v

Chemical Properties of Gageite

Formula:
Mn21(Si4O12)2O3(OH)20
Essential elements:
All elements listed in formula:

Relationship of Gageite to other Species

9.DH.05LeucophaniteNaCaBeSi2O6F
9.DH.10OhmiliteSr3(Ti,Fe3+)(Si4O12)(O,OH) · 2-3H2O
9.DH.15HaradaiteSrVSi2O7
9.DH.15SuzukiiteBaVSi2O7
9.DH.20BatisiteBaNaNaTi2(Si4O12)O2
9.DH.20Shcherbakovite(K,Ba)KNa(Ti,Nb)2(Si4O12)O2
9.DH.25TaikaniteSr3BaMn22+(Si4O12)O2
9.DH.30KrauskopfiteBaSi2O5 · 3H2O
9.DH.35Balangeroite(Mg,Fe2+,Fe3+,Mn2+)42Si16O54(OH)40
9.DH.40AenigmatiteNa2Fe52+Ti(Si6O18)O2
9.DH.40DorriteCa4(Mg3Fe93+)O4(Si3Al8Fe3+O36)
9.DH.40Høgtuvaite(Ca,Na)2(Fe2+,Fe3+,Ti)6[O2|Be(Si,Al)5O18]
9.DH.40KrinoviteNa2Mg4Cr23+(Si6O18)O2
9.DH.40Makarochkinite(Ca,Na)2Fe42+Fe3+Ti[O2|BeAlSi4O18]
9.DH.40RhöniteCa2(Mg,Fe2+,Fe3+,Ti)6[O2|(Si,Al)6O18]
9.DH.40Serendibite(Ca,Na)2(Mg,Fe2+)3(Al,Fe3+)3[O2|(Si,Al,B)6O18]
9.DH.40WelshiteCa4Mg9Sb3O4[Si6Be3AlFe2O36]
9.DH.40WilkinsoniteNa2Fe42+Fe23+(Si6O18)O2
9.DH.45Sapphirine(Mg,Fe)4-xAl4+x[Al4+xSi2-xO18]O2
9.DH.50Khmaralite(Mg,Al,Fe)16[(Al,Si,Be)12O36]O4
9.DH.55Surinamite(Mg,Fe)3Al4BeSi3O16
9.DH.60Deerite(Fe,Mn)6(Fe,Al)3[Si6O17]O3(OH)5
9.DH.65HowieiteNa(Fe,Mn)10(Fe,Al)2Si12O31(OH)13
9.DH.65Taneyamalite(Na,Ca)(Mn,Mg,Fe)12Si12(O,OH)44
9.DH.70JohninnesiteNa2Mn92+Mg7(OH)8[AsO4]2[Si6O17]2
9.DH.75AgrelliteNaCa2Si4O10F
14.7.1SanborniteBa2(Si4O10)
14.7.2KrauskopfiteBaSi2O5 · 3H2O
14.7.3WalstromiteBaCa2(Si3O9)
14.7.4MacdonalditeBaCa4Si16O36(OH)2 · 10H2O
14.7.5EricssoniteBaMn22+Fe3+(Si2O7)O(OH)
14.7.6Ericssonite-2OBaMn22+Fe3+(Si2O7)O(OH)
14.7.7GillespiteBaFe2+[Si4O10]
14.7.8AndrémeyeriteBaFe22+(Si2O7)
14.7.9PellyiteBa2Ca(Fe,Mg)2Si6O17
14.7.10TaikaniteSr3BaMn22+(Si4O12)O2
14.7.11WillemiteZn2SiO4
14.7.12HemimorphiteZn4Si2O7(OH)2 · H2O
14.7.13ZincsiliteZn3(Si4O10)(OH)2 · 4H2O
14.7.14HardystoniteCa2Zn(Si2O7)
14.7.15PetedunniteCa(Zn,Mn2+,Mg,Fe2+)Si2O6
14.7.16ClinohedriteCaZn(SiO4) · H2O
14.7.17JunitoiteCaZn2Si2O7 · H2O
14.7.18LarsenitePbZnSiO4
14.7.19EsperitePbCa2Zn3(SiO4)3
14.7.20HodgkinsoniteMn2+Zn2(SiO4)(OH)2
14.7.21GerstmanniteMnMgZn(SiO4)(OH)2
14.7.23FranklinfurnaceiteCa2Fe3+Mn32+Mn3+(Zn2Si2O10)(OH)8

Other Names for Gageite

Name in Other Languages:
German:Gageit
Spanish:Gageita

Other Information

Not fluorescent in UV
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Industrial Uses:
None.

References for Gageite

Reference List:
Phillips, A.H. (1910) Gageite, a new mineral from Franklin, New Jersey. American Journal of Science: 30: 283-284.

Palache, C. (1935) The Minerals of Franklin and Sterling Hill, Sussex County, New Jersey. USGS Professional Paper 180: 111.

Moore, P.B. (1968) Relations of the manganese-calcium silicates, gageite and harstigite. American Mineralogist: 53: 309-315.

Moore, P.B. (1969) A novel octahedral framework structure: gageite. American Mineralogist: 54: 1005-1017.

Dunn, P.J. (1979) The chemical composition of gageite: an empirical formula. American Mineralogist: 64: 1056-1058.

Ferraris, G., Mellini, M., and Merlino, S. (1987) Electron-diffraction and electron microscopy study of balangeroite and gageite: crystal structures, polytypism, and fiber texture. American Mineralogist: 72: 382-391.

Dunn, Pete J. (1995): Franklin and Sterling Hill New Jersey: the world’s most magnificent mineral deposits, part 3: 460.

Internet Links for Gageite

Specimens:
The following Gageite specimens are currently listed for sale on minfind.com.

Localities for Gageite

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.
Italy
 
  • Liguria
    • La Spezia Province
      • Rocchetta Vara
Balestra C. (2012): Sistematica ligure 2012. Prie. Notiziario di Mineralogia Ligure. 8-2 60-69
Japan
 
  • Honshu Island
    • Kanto Region
      • Saitama Prefecture
        • Chichibu City
          • Urayama
K. Nishikubo, T. Yamada, A. Harada, M. Takizawa, K. Tange, Y. Kosuge, R. Miyawaki, and S. Matsubara (2005) "Rambergite from the Hirogawara mine, Urayama, Chichibu City, Saitama Prefecture, Japan"
    • Kinki region
      • Mie Prefecture
        • Watarai town
Masutomi Museum specimen (Kyoto)
  • Shikoku Island
    • Kochi Prefecture
      • Nagaoka-gun
Journal of Mineralogical and Petrological Sciences 103,400-406(2008)
Russia
 
  • Northern Region
    • Komi Republic
      • Prepolar Ural
http://webmineral.ru/deposits/item.php?id=1551
South Africa
 
  • Northern Cape Province
    • Kalahari manganese field
      • Hotazel
Von Bezing, K. L. et al. (1991) The Kalahari manganese field: An Update, Mineralogical Record 22(4) 279-302;
      • Kuruman
        • N'Chwaning Mines
[Gageite-2M] www.excaliburmineral.com
Minerals of South Africa
South Korea
 
  • Gangwon-do (Kangwon-do; Gang'weondo)
    • Chongson-gun
      • Nam-myon (Sindong-myon)
Kinosaki, Y. (1943) Jour. Min. Soc. Korea, 26, 8.
Sweden
 
  • Värmland
    • Filipstad
      • Persberg district
        • Pajsberg
Nysten, P. (2004): Harstigen ett mineralogisk eldorado i Bergslagen. Norsk Bergverksmuseum Skrift 28: 5-13
USA
 
  • California
    • San Bernardino Co.
      • San Gabriel Mts
        • Wrightwood
Cannon Microprobe Services, Seattle, WA
    • Santa Clara Co.
      • Diablo Range
        • Black Wonder District
          • Mount Hamilton
            • San Antonio Valley
Pete J. Dunn, Donald R. Peacor, Richard C. Erd, and Robert A. Ramik (1986) Franciscanite and örebroite, two new minerals from California and Sweden, related to redefined welinite. American Mineralogist, 71:1522-1526.
    • Stanislaus Co.
      • Diablo Range
        • Ladd-Buckeye District
          • Mount Oso
Econ Geol (1992) 87:2023-2040; Huebner, J. Stephen; Flohr, Marta J. (1990) Microbanded manganese formations; protoliths in the Franciscan Complex, California; USGS Professional Paper 1502.
  • New Jersey
    • Sussex Co.
      • Franklin Mining District
        • Franklin
Palache(1935): 111; Dunn(1995): Pt3: 460.
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2015, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: July 4, 2015 23:42:44 Page generated: June 22, 2015 16:07:41