Minerals and Gem stones from Tanzania

Collection of Tanzanian Minerals, courtesy of Mawingu Gems. Photos © by Hubert Heldner
Tanzanite specimen from Merelani, with Prehnite and Diopside crystals. Dimension : 60 x 25 x 10mm       weight : 61 grams       price on request.
Tanzanite Merelani	Tanzanite Merelani	Tanzanite Merelani	Tanzanite Merelani
bi-color Tanzanite Merelani	Spessartite Garnet on Mica Sangolungulu	Spessartite Garnet on Mica Sangolungulu	Spessartite Garnet Sangolungulu
Spessartite Garnet on Mica Sangolungulu	Spessartite Garnet on Matrix Sangolungulu	Spessartite Garnet on Matrix Sangolungulu	Spinel Morogoro
Spinel octahedron Mahenge	Spinel on Matrix Mahenge	Spinel Mahenge	Spinel Mahenge
Spinel Mahenge	Danburite Morogoro	Danburite Morogoro	Danburite Morogoro
Magnesio-Axinite Merelani	Magnesio-Axinite Merelani	Magnesio-Axinite Merelani	Magnesio-Axinite Merelani
Magnesio-Axinite Merelani	Phrenite Merelani	Phrenite Merelani	Phrenite Merelani
Ruby Winza	Ruby Winza	Ruby Winza	Ruby & Sapphire
Tremolite Merelani	Tsavorite on Matrix Merelani	Tsavorite on Matrix Merelani	Kyanite
Kyanite	Kyanite twin	Tsavorite on Matrix Merelani	Tsavorite on Matrix Merelani
Enstatite	Tourmalin Morogoro	Tourmalin Morogoro	Kyanite
Kyanite	Sphene	Apatite	Zircon
Zircon	Diopside Merelani	Diopside on Matrix Merelani	Diopside on Matrix Merelani
Diopside Merelani	Diopside Merelani	Diopside Merelani	Aquamarine Songea
Aquamarine Songea	Calcite on Matrix Merelani	Scapolite Dodoma	Scapolite Dodoma
Scapolite Morogoro	Scapolite Dodoma	Scapolite Dodoma	Quarz with Rutile Morogoro
Alexandrite Manyara	Alexandrite Manyara	Alexandrite Manyara	Ruby in Zoisite Longido
Ruby in Zoisite Longido	Tourmaline with usambara effect	Tourmaline Usambara

Mineral Origin Alexandrite, Chrysoberyl group Manyara lake Apatite Merelani Apatite Morogoro Beryl, Emerald Manyara lake Chrome Tourmaline Landanai Chrysoberyl Manyara lake Chrysoberyl Tunduru Chrysopras and Chrysopal Haney hills Disthen, Kyanite Merelani Danburite, yellow Morogoro Enstatite yello brown Garnet Tanga Garnet Umba Garnet, color change Tanga Garnet, Rhodolite Tanga Garnet, Spessartite Tunduru Garnet, Chrome Grossular Kolomo Garnet, Grossular Latatema hills Garnet, Rhodolite Merelani hills Garnet, Tsavorite Lualeny and Mgama Garnet, Vanadium Grossular Kolomo, Lualenyi, Mgama Kornerupin Merelani hills Ruby Winza north of Iringa. Ruby Merelani Ruby, alluvial Tsavo national park south of Mgama Sapphire, Corundum group all colors Umba Sapphire, Corundum group all colors Songea Scapolite yellow Merelani hills Scapolite, lila and blue Morogoro Scapolite cat's eye Dodoma and Singida Scapolite with star effect Dodoma and Singida Scapolite yellow, colorless, lila Dodoma and Singida Spinel Morogoro Tanzanite, Zoisite group Merelani hills Tourmaline Dravit with Vanadium Gerevi hills north of Umba valley Vanadium Tourmaline Zoisit Merelani Zoisit with ruby Longido Scientific publications Garnet, corundum and other gem minerals from Umba, Tanzania. P.C. Zwaan February 2014

Some of the gemstones we found and cut in Tanzania.   Red sunstone rough and cut.     Blue Iolith with sunstone sparks rough and cut.     Silvery sunstone with directional color both cabochons are cut out of the same rough piece.

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© Copyright on all photos by Hubert Heldner