Geochemical Maps

Geochemical maps and data
Available maps and data include:

Price list

  • Maps and raw data for Mpanda (QDS 153), Biharamulo (QDS 30, 44), Kahama (QDS 62 and 78), western part of Lake Victoria
  • Raw data covering Tabora-Shinyanga area (QDS 48, 49, 63, 64, 65, 66, 79 and 80) and south western part of Tanzania (Rukwa-Kigoma-Mbeya areas).
S/N Surveyor Date Sample Medium Elements Analysed Comments
1 Diamond Exploration Company (Tanex 1992 Soil All major elements and oxides ,Ni_ Cu Zn_ As Se Rb Sr Y Zr Nb Mo Sn Sb Te Ta, W, PB, Bi Th, U, Cr, V Co, Ba, Au, Pb Sampling density of one sample per 1 km2 Area covered include QDS 48, 49. 50, 63, 64, 65, 66,79, 80 and 81.
2 UNDP 1975-77 Stream Sediments Cu, Pb, Zn, Ni, Co, Cr Area 19,020 km2 QDS 1,2,3,7,8,9,17,18,19,29,30,31. A total of 1938 stream sediment samples were collected at sampling density of one sample per 5 km2 in reconnaissance phase. Analysis by AAS. Digitised maps and CD-ROM in scale 1:300,000 are available.
3 Western Rift Exploration Co Ltd. 1956-60 Stream sediments and mbuga clays, Minus 80 mesh analysed. Heavy mineral samples from stream sediment Cu, Zn, Pb, Ni Area 87,000 km2. 90,000 samples. Detailed reconnaissance survey, samples at 0.8 km intervals on streams. Analysis by cold extraction (Cu, Zn) or perchloric acid extraction and colorimetry (Cu, Pb, Ni). Data available on hard copies
4 Geo-survey (GST-GTK 2003-2007 Stream sediments Au, Ag, Pd, Te, Hg, Cu, Pb, Zn, Ni, Fe Mo, Sn, Bi, Sb, Y, Be, Nb, La, Co, V, Al, As, B, Ba, Ca, Cr, Fe, K, La, Li, Mg, Mn, Na, P, Pb, Rb, S, Sc, Sr, Th, Ti, U, V, Y, Zr and major elements. Stream sediments sampling carried out by GTK and GST. Sampling density of one sample per 10 km2. Area covered include QDS 30, 44, 62, 78 and 153. The analytical methods XRF, Aqua regia with ICP-OES, GFAAS, AAS and CVAAS. Data and maps are available in digital form.
5 GST 2005 -2006 Stream sediments Au, Ag, Hg, Cu, Pb, Zn, Ni, Fe, Mn, Co Stream sediments sampling carried out by GST. Sampling density of one sample per 10 km2 in reconnaissance phase. Area covered include QDS 191, 192, 193, 172 and 173. Analytical methods AAS and CVAAS. Raw data are available.
6 Joint German-Tanzania Gold Project (BGR) 1988-91 Rocks, Stream sediments, Heavy minerals from stream sediments and Soil. Rock samples: XRF (see text) and Au (fire assay). Stream sediments: Au (cyanide leach and AAS). Heavy minerals: Au (fire assay)Soil: Cyanide leach + AAS Area: Siga Hills, Lake Victoria Goldfields (QDS 47, 62, 63). Analytical methods XRF and fire assay for gold. Digital data and had copy (reports) are available.