| Reference Type | Journal (article/letter/editorial) |
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| Title | Johninnesite, a arsenosilicate from new sodium manganese the Kombat Mine, Namibia |
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| Journal | Mineralogical Magazine | ISSN | 0026-461X |
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| Authors | Dunn, Pete J. | Author |
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| Peacor, Donald R. | Author |
| Su, Shu-Chun | Author |
| Nelen, Joseph A. | Author |
| von Knorring, Oleg | Author |
| Year | 1986 (December) | Volume | 50 |
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| Issue | 358 |
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| Publisher | Mineralogical Society |
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| Download URL | https://rruff.info/doclib/MinMag/Volume_50/50-358-667.pdf+ |
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| DOI | doi:10.1180/minmag.1986.050.358.12Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 3911 | Long-form Identifier | mindat:1:5:3911:0 |
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| GUID | 0 |
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| Full Reference | Dunn, Pete J., Peacor, Donald R., Su, Shu-Chun, Nelen, Joseph A., von Knorring, Oleg (1986) Johninnesite, a arsenosilicate from new sodium manganese the Kombat Mine, Namibia. Mineralogical Magazine, 50 (358) 667-670 doi:10.1180/minmag.1986.050.358.12 |
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| Plain Text | Dunn, Pete J., Peacor, Donald R., Su, Shu-Chun, Nelen, Joseph A., von Knorring, Oleg (1986) Johninnesite, a arsenosilicate from new sodium manganese the Kombat Mine, Namibia. Mineralogical Magazine, 50 (358) 667-670 doi:10.1180/minmag.1986.050.358.12 |
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| In | (1986, December) Mineralogical Magazine Vol. 50 (358) Mineralogical Society |
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| Abstract/Notes | AbstractJohninnesite, ideally Na2Mg4Mn12As5+2 Si12043(OH)6,, is triclinic, P1 or P1̄, with a = 10.44(2), b = 11.064(6), c = 9.62(1) Å, α = 107.43(7), β = 82.7(1), γ = 111.6(1)°, V = 894(2) Å3, and Z = 1. It occurs as yellow-brown fibrous aggregates, associated with rhodonite, kentrolite, and richterite, from the Kombat Mine in Namibia. Johninnesite has cleavages on {100} and {010}, density of 3.48 (meas.), 3.51 (calc.) g/cm3. It is biaxial negative, with 2Vx = 41.9°, α = 1.6742(4), β = 1.6968(3), γ = 1.6999(3); dispersion r > υ, distinct. |
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