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Latvia | |
| Dmitry Vorobjov's collection |
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Russia | |
- Kolomensky Urban District
| Godovikov, A.A., Ripinen, O.I., and Motorin, S.G. [Годовиков, А.А., Рипинен, О.И., и Моторин, С.Г.] (1987) Agates [Агаты]. Nedra [Недра], Moscow, 368 pp. (in Russian) |
| Feklichev, V.G. [Фкеличев, В.Г.] (1998) Mineral diversity of the Moscow region [Минералогическое разнообразие Подмосковья]. Sredi Mineralov (Almanac) [Среди минералов (альманах)], 103-112 (in Russian). |
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Ukraine | |
| Dvoichenko P.A. The minerals of Crimea (1914) - Zapiski Krymskogo obshchestva estestvoispytatelei (Proceeding of the Crimea Society of Naturalistes), 1914, vol. 4, p. 1-208 (Rus.) - Popov S.P. Mineralogy of the Crimea (1938). - M.-L., AN SSSR, 1938, 352 p. (Rus.) |
Lace Sunset outcrops, Ogre Municipality, Zemgale Region, Latvia