Reference Type | Journal (article/letter/editorial) |
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Title | A dickite with an elongated crystal habit and its dehydroxylation |
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Journal | Mineralogical Magazine and Journal of the Mineralogical Society |
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Authors | Schmidt, E. R. | Author |
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Heckroodt, R. O. | Author |
Year | 1959 (December) | Volume | 32 |
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Issue | 247 |
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Publisher | Mineralogical Society |
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Download URL | https://rruff.info/doclib/MinMag/Volume_32/32-247-314.pdf+ |
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DOI | doi:10.1180/minmag.1959.032.247.04 |
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| Generate Citation Formats |
Mindat Ref. ID | 5536 | Long-form Identifier | mindat:1:5:5536:3 |
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GUID | 0 |
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Full Reference | Schmidt, E. R., Heckroodt, R. O. (1959) A dickite with an elongated crystal habit and its dehydroxylation. Mineralogical Magazine and Journal of the Mineralogical Society, 32 (247) 314-323 doi:10.1180/minmag.1959.032.247.04 |
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Plain Text | Schmidt, E. R., Heckroodt, R. O. (1959) A dickite with an elongated crystal habit and its dehydroxylation. Mineralogical Magazine and Journal of the Mineralogical Society, 32 (247) 314-323 doi:10.1180/minmag.1959.032.247.04 |
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In | (1959) Mineralogical Magazine Vol. 32 (247) Mineralogical Society |
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Abstract/Notes | SummaryDickite from a new occurrence at Barkly East, Cape Province, is described and compared with a previously unreported dickite from Postmasburg and a dickite from Ouray, Colorado. The Barkly East dickite crystals are elongated in the direction of the a-axis; the ratio of length to width of crystals varies from 3:1 to 16:1. Optical, electron microscopic, X-ray, and thermal data and a chemical analysis are given. The thermogram of the fraction smaller than 2 µ e.s.d.1 is characterized by a single peak at 600°C., while that of fractions larger than 2 µ e.s.d. shows a double endothermal effect. This two-stage dehydroxylation of dickite on heating is attributed to a particle size effect. |
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