Geological Maps
Geophysical Maps
Geochemical Maps
Minerals Occurrence Data

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

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.

2

Western Rift Exploration Co Ltd.

1956-60

Stream sediments and mbuga clays, Minus 80 mesh analysed.
Heavy mineral samples from stream sediments

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.

3

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.

4

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.

5

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.

6.

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.