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Juddite

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John Wesley Judd
Name:
Juddite was named by Lewis Leigh Fermor in 1908 in honor of John Wesley Judd [February 18, 1840 – March 3, 1916]. Judd was a field geologist and petrologist for the British Geological Survey and later professor of geology at the Imperial (Royal) College in London, England.
Red Mn-bearing amphibole with variable compositions. Juddite was originally defined (1908) as a manganiferous amphibole with intense pleochroism (carmine, blue or green, and orange), and with the optic axial plane is perpendicular to the plane of symmetry.

Leake (1978) set juddite as a variety of arfvedsonite based on data provided by Bilgrami(1955). Later reviews of juddite analyses has shown a wide variation of compositions in the sodioum and sodium-calcium amphibole subgroups. Leakeite group and dellaventuraite group amphiboles was first described from juddite-like material


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Classification of JudditeHide

Discredited

Other Language Names for JudditeHide

German:Juddit
Spanish:Juddita

Common AssociatesHide

Associated Minerals Based on Photo Data:
Braunite2 photos of Juddite associated with Braunite on mindat.org.

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 JudditeHide

Reference List:
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L.J. Spencer (1910): A (fifth) list of new mineral names: with an index of authors. Mineralogical Magazine Vol 15 pp 415-445
Bernard E. Leake (1978). Nomenclature of amphiboles, Mineralogical Magazine Vol 42 pp 533-563.
S.A. Bilgrami (1955). Manganese amphiboles from Chikla, Bhandara district, India. Mineralogical Magazine Vol. 30, pp 633-640
Kimberly Tait, Frank C. Hawthorne, Joel D. Grice, Luisa Ottolini, V.K Nayak (2005). Dellaventuraite, NaNa2(MgMn23+Ti4+Li)Si8O22O2, a new anhydrous amphibole from the Kajlidongri Manganese Mine, Jhabua District, Madhya Pradesh, India, American Mineralogist, Volume 90, pages 304-309.

Internet Links for JudditeHide

Localities for JudditeHide

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.
India
 
  • Madhya Pradesh
    • Balaghat District
Kilpady, S.R. (1964): Winchite from Ponia, Balaghat District, Madhya Pradesh. J. Univ. Geol. Soc. Nagpur 1, 7.
    • Jabalpur Division
      • Chhindwara District (Chindawara District; Chindwara District)
Roy, S., and Purkait, P.K. (1968): Contributions to Mineralogy and Petrology 20, 86-114.
    • Jhabua District
Nayak, V. K. (1966): Mineralogy and genesis of the manganese ores of Kajlidongri mine, district Jhabua, Madhya Pradesh, India. Economic Geology 61, 1280-1282.
  • Maharashtra
    • Bhandara District
Bilgrami, S. A. (1955). Manganese amphiboles from Chikla, Bhandara district, India. Min. Mag, 30, 633-644.
Mineral and/or Locality  
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