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Zimbabwe | |
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| [var. Chrome-Chalcedony] Bartholomew, D. S. (1990). Base metal and industrial mineral deposits of Zimbabwe. Zimbabwe Geological Survey, Mineral Resources Survey No. 22 |
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| [var. Chrome-Chalcedony] Bartholomew, D. S. (1990). Base metal and industrial mineral deposits of Zimbabwe. Zimbabwe Geological Survey, Mineral Resources Survey No. 22 |
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| [var. Chrome-Chalcedony] Webster, R. (1994) Gems: their sources, description and identification. 5th ed., P.G. Read (ed). (Butterworths, London).
Phillips, G. & Brown, G. (1989) Mtorolite. Australian Gemmologist, 17, 205-207
Lapidary Journal, vol. 21, 1967, pp. 1188-1189 |
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| Wolfgang Hampel, site visit June 2014 |
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| Wolfgang Hampel, site visit July 2014 |
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| Wolfgang Hampel (thin section microscopy, November 2014) |
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| [var. Agate] Wolfgang Hampel, October 2014 |
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| [var. Agate] Wolfgang Hampel, October 2014 |
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| Wolfgang Hampel, February 2015 |
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| Moore, A. (2013): The Geology of the Victoria Falls Area, Field Excursion Guidebook.- Geol. Soc. Of Zimbabwe, Annual Summer Symposium Victoria Falls, 28-30 November 2013, 15 pages + app. |
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| Rocks & Minerals (1955) 30:464-471 |
Mutorashanga, Zvimba District, Mashonaland West, Zimbabwe