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Mineral E (of Dunn, et. al., 1982)

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About Mineral E (of Dunn, et. al., 1982)Hide

Dark-brown to black
Specific Gravity:
Crystal System:
Mineral E was listed as a potential new member of the chlorophoenicite series (Dunn et al., 1982; Dunn, 1995, 2004). The original material was poorly crystalline and no species name was proposed.
Isostructural with:
Bright translucent black needles showing typical chlorophoenicite habit. The crystals are actually brown translucent.

Classification of Mineral E (of Dunn, et. al., 1982)Hide

Unnamed (probably valid)

Physical Properties of Mineral E (of Dunn, et. al., 1982)Hide

Dark-brown to black
Probably darkly colored because of Mn^3+
3.62 g/cm3 (Measured)    

Crystallography of Mineral E (of Dunn, et. al., 1982)Hide

Crystal System:
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Cell Parameters:
a = 21.80 Å, b = 3.08 Å, c = 7.27 Å
a:b:c = 7.078 : 1 : 2.36
Unit Cell V:
488.14 ų (Calculated from Unit Cell)
Long bladed crystals.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
10.90 (100)
3.74 (5)
3.62 (10)
3.49 (5)
3.23 (2)
3.02 (30)
2.95 (1)
2.86 (5)
Dunn, Peacor, leavens, and Simmons (1982) Jarosewichite and a Related Phase: Basic Manganese Arsenates of the Chlorophoenicite Group from Franklin New Jersey, American Mineralogist, v. 67, p. 1043-1047.

Relationship of Mineral E (of Dunn, et. al., 1982) to other SpeciesHide

Other Members of this group:
Chlorophoenicite(Mn,Mg)3Zn2(AsO4)(OH,O)6Mon. 2/m : B2/m
JarosewichiteMn2+3Mn3+(AsO4)(OH)6Orth. 2 2 2
Magnesiochlorophoenicite(Mg,Mn)3Zn2(AsO4)(OH,O)6Mon. 2/m : B2/m

Fluorescence of Mineral E (of Dunn, et. al., 1982)Hide

Not fluorescent in UV

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 Mineral E (of Dunn, et. al., 1982)Hide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Dunn,P. J., Peacor, Donald R., Leavens, Peter B. and Simmons, William B. (1982) Jarosewichite and a Related Phase: Basic Manganese Arsenates of the Chlorophoenicite Group from Franklin New Jersey, American Mineralogist, v. 67, p. 1043-1047.
Dunn, P. J (1995, 2004 (first edition with corrections)) Franklin and Sterling Hill, New Jersey: The World's Most Magnificent Mineral Deposits, privately published, v. 2, p. 688.

Internet Links for Mineral E (of Dunn, et. al., 1982)Hide

Localities for Mineral E (of Dunn, et. al., 1982)Hide

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.
  • New Jersey
    • Sussex Co.
      • Franklin Mining District
        • Franklin
Mineral E (of Dunn, et. al., 1982)
Mineral and/or Locality  
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