Sapphire and Garnet from Kalalani, Tanga province, Tanzania

Gems and Gemology

Volumn 35, Issue 2, 1999, Pages 108-120

  Seifert, Antonin V ^a   Hyrsl, Jaroslav ^b  

^a CZECH GEOLOGICAL SURVEY   (Czech Republic)

^b CHARLES UNIVERSITY   (Czech Republic)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 33947577577     PISSN: 0016626X     EISSN: None     Source Type: Journal    
DOI: 10.5741/GEMS.35.2.108     Document Type: Article

References (12)

1. Dirlam D.M., Misiorowski E.B., Tozer R., Stark K.B., Basset A.M. (1992) Gem wealth of Tanzania. Gems & Gemology, Vol. 28, No. 2, pp. 80-102.
2. Gübelin E.J., Koivula J. (1986) Photoatlas of Inclusions in Gemstones. ABC Edition, Zurich, Switzerland.
3. Hänni H.A. (1987) On corundum from Umba Valley, Tanzania. Journal of Gemmology, Vol. 20, No. 5, pp. 278-284.
4. Hartley E.W., Moore W.R. (1965) Quarter Degree Sheet 91 and 110, Daluni (scale 1:125,000), Geological Survey of Tanzania, Dodoma.
5. Henn U., Bank H., Bank F.H. (1990) Red and orange corundum (ruby and padparadscha) from Malawi. Journal of Gemmology, Vol. 22, No. 2, pp. 83-89.
6. Henn U., Milisenda C.C. (1997) Neue Edelsteinvorkommen in Tansania: Die Region Tunduru-Songea. Zeitschrift der Deutschen Gemmologischen Gesellschaft, Vol. 46, No. 1, pp. 29-43.
7. Kane R.E., Kampf A.R., Krupp H. (1990) Well-formed tsavorite gem crystals from Tanzania. Gems & Gemology, Vol. 26, No. 2, pp. 142-148.
8. Keller P.C. (1992) Gemstones of East Africa, Geoscience Press, Tucson, AZ, pp. 32-41.
9. Malisa E., Muhongo S. (1990) Tectonic setting of gemstone mineralization in the Proterozoic metamorphic terrane of the Mozambique Belt in Tanzania. Precambrian Research, Vol. 46, Nos. 1-2, pp. 167-176.
10. Schmelzer K., Bosshart G., Hänni H. (1982) Naturfarbene und behandelte gelbe und orange-braune Sapphire. Zeitschrift der Deutschen Gemmologischen Gesellschaft, Vol. 31, No. 4, pp. 265-279.
11. Solesbury F.W. (1967) Gem corundum pegmatites in NE Tanganyika. Economic Geology, Vol. 62, No. 7, pp. 983-991.
12. Stockton C.M., Manson D.V. (1985) A proposed new classification for gem-quality garnets. Gems & Gemology, Vol. 21, No. 4, pp. 205-218.