reptile deposit

I'm not sure if this is correct but i was looking at the potential of nambia and found info at
http://www.wise-uranium.org/uoafr.html
with this
Tubas and Tumas tenements
Size: 15278 tonnes U
Ore grade: 0.022% U
• Deep Yellow Ltd (being acquired)

and i'm not sure if this is the reptile tenements that was explored by from previous explores. Anyway i found a large file with namibian deposits and the results were this
http://www.mme.gov.na/gsn/pdf/uranium.pdf

4.2.2.1.2 The Tubas Uranium deposit
The Tubas deposit is situated along the
Tumas River some 40 km east of Walvis Bay.
The deposit was located during exploration
conducted over the Tubas Grant (Fig. 25).
Anomalous zones were located in the
southern part of the grant which is transected by
the westwards-flowing Tumas River. T-cup
survey anomalies were percussion drilled and
this located secondary uranium mineralisation
associated with the palaeochannel of the Tumas
valley.
The Tumas valley is in excess of 40-m-deep
and the rock types occupying the palaeovalley
consist of red to brick-red sand or sandstone,
grits, conglomerates, gypsum and calcrete. Red
sands occur up to 10 m below surface. Calcretes
of ranging shades are present below the red
sands. Within the calcretes are loosely
consolidated grits and gravels (Fig. 29).
Uranium mineralisation in the Tumas River
drainage is present mainly in tabular bodies of
the upper 20 m. The mineralisation is
Figure 29: Plan showing drillhole positions in the Tubas River area (after Anglo American
Prospecting Services).

Mineral Resources of Namibia
Nuclear and Fossil Fuels - Uranium
predominantly associated with red sands but
values in excess of 100 g/t have also been
recorded from calcretes and gravels.
Carnotite occurs as yellow specks and
streaks, or coats worm burrows or shrinkage
spaces around larger clasts. Traces of uranium
have also been identified in refractory heavy
minerals.
Anomalous U results have been
intersected in 41% of the boreholes drilled in
the Tumas River (Fig. 30). These values range
between 50 to 200 g/t. The highest individual
assay result recorded was 951 g/t U over one
metre, some 11 m below surface. The same
borehole returned an average value of 639 g/t
U over three metres.
A preliminary estimate of the results of this
programme indicated 130 million t at 90 g/t U
over an average thickness of 7 m with an
average overburden of 3 m.
An additional percussion-drill programme
was conducted over selected small areas and
confirmed the gypsiferous red sandstone as the
main host for mineralisation. Higher grades
were also indicated with values in excess of 1
000 g/t U being returned from boreholes on
three of the twelve lines drilled. The single
highest assay was 8 177 g/t over 1 m (Wagener,
1977b).
Pitting and trenching in selected areas
indicated extreme variability of mineralisation
over small areal separations of ±2 m. During the
later phases of exploration, metallurgical tests
were undertaken on the ore but the unfavorable
uranium market led to the termination of
exploration activities (Wagener, 1983).
4.2.2.1.4 Tumas Deposit
The Tumas grant is situated 70 km due east
of Walvis Bay and covers a portion of the
Namib Desert Park (Fig. 25).
The area is underlain mainly by biotite
schists, quartzites, meta-greywackes, marbles
and silicates of the Tinkas Member of the
Karibib Formation. The rocks have been
intensely folded and locally have a north-
northeast - south-southwest strike and steep
dips. Intrusive Salem type granites and
pegmatites occur mainly in the west. Karoo age
dolerite dykes have intruded parallel to the
regional foliation trend of the Damaran
metasediments.
Aeromagnetic surveys located one major and
three other significant anomalies. A detailed
block, termed Block A, was designed to cover
these anomalies.
Block A is situated in the northeastern part of
the grant area. A marked ridge of Tinkas
Member metasediments on the western
boundary of the grant has given rise to a
restriction in the east-west drainage resulting in
only one outlet to the west. This has resulted in a
damming effect to the east and sedimentation of
mainly calcareous lithologies took place within
the palaeochannels (Fig. 31).
The calcareous grit is a mature sediment
containing grains of rounded to sub-angular
quartz and feldspar cemented by calcium
carbonate. Clasts of Damaran metasediments
Figure 31: Simplified geology of the Tumas
deposit (after Falconbridge of SWA).

Mineral Resources of Namibia
Nuclear and Fossil Fuels - Uranium
and Karoo dolerites are rarely present. The rock
is very similar to the Langer Heinrich
Formation found at the Langer Heinrich deposit.
Carnotite mineralisation is generally sparsely
distributed although rich patches associated
with smoky quartz grains grade up to 510 g/t
.
An immature brown calcareous siltstone,
containing greater amounts of angular
fragments and a higher percentage of mafic
minerals, is considered to be younger than the
calcareous grits described above. It is cemented
by calcium carbonate and its brown colouring is
due to the weathering of mafic minerals.
It crops out over an area of some 700 by 150
m, but radon cup surveys have indicated that it
may extend for a further 1 000 m within the
sand-filled present Tumas drainage system.
The rock is consistantly mineralised across
the outcrop and carnotite occurs as cavity-fills
and also as a finely disseminated phase. The
grades vary between 315 and 770 g/t U
.
Surficial sands cover most of the plains in
Block A. Calcretisation of these sediments has
occurred and concretionary calcretes form a
continuous capping beneath the sand-covered
areas.
Gypcretes form the youngest of the
sediments and occur as cements in river gravels
and sedimentary breccias. Gypsiferous
sedimentary breccias were found to contain up
to 60 kg/t U
(Borton, 1977).
Five mineralised zones were detected within
the northern channel. The zones correspond
well with the palaeochannel which has been
dissected by metasedimentary barriers. The
thickness of the palaeochannel varies between 1
and 15 m, averaging 10 m, whereas the
thickness of the mineralisation itself varies
between 1 and 5 m, averaging 3.2 m. The
grades are constant and average 200 g/t U
.
The southern channel is far more consistently
mineralised and presumably formed the main
palaeochannel. Thicknesses of calcretized gritty
fluvio-sediments vary between 1 m and >20 m,
averaging 12 m. The thickness of mineralisation
is also variable between 1 m and 11 m with an
average of 3.5 m. The grade averages 260 g/t
U
. However, a high-grade area containing
approximately 1 million t at 560 g/t is present in
the south of the southern channel.
The total reserves of the Tumas deposit have
been estimated at 13 million t at an average
grade of 244 g/t U
(Ransom, 1981).
The southern channel extends eastwards into
the Namib Park II grant area (Fig. 25). The area
has been covered by a 1 by 1 km T-cup grid and
a 0.5 by 1 km soil sample grid. Anomalous areas
were then covered by a detailed T-cup grid.
The reserves calculated are presented in Table
9.
Table 9: Ore reserve calculation of the NIIWDE
area (after Kotze, 1978)
Cut-off Tonnage
Grade Overburden
grade
g/t
(tons)
(g/t)
100 30 201 200 237 20 887 600
200 8 617 600 352 20 887 600
300 8 617 600 466 19 486 400
Two aero-radiometric anomalies situated over
weathered schist were surveyed and drilled. No
significant U
3
O
8
mineralisation was encountered
(Kotzé, 1978).

Can anyone confirm if this is the ground DYL are going to drill and hopefully mine