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Strangways
Regional Setting
The Strangways Project continues Flinders association
with the G2 Corridor by being located at the G1-G2-G3 intersection, some
100 kilometres northeast of Alice Springs as illustrated on Figure
1. The regional setting is more fully illustrated by Figure
10 which shows the project area in relation to:
- The G1- G2-G3 intersection
- The location of eleven positive kimberlitic indicator
mineral results
- The location of one microdiamond
- The location of five intrusive complexes of deep seated
affinity. These are the Mordor and Mount Hay Igneous Complexes, the Mud
Tank Carbonatite, Johannsen's Phlogopite Mine and the Mount Bleechmore
Carbonatite dyke swarm.
It is believed that the confluence of the above
features points to a high diamond prospectivity for the project area.
Tenements
The project area consists of four granted ELs, one EL
application, one Mineral Claim and two Mineral Lease applications totalling
1,711 square kilometres. Details are shown in the table below:
| Name |
Tenement Number
|
Area km²
|
Registered Holder
|
| Johnnies Reward MC |
MCS 227 |
17.5ha |
Flinders Diamonds Limited
|
| Johnnies Reward South |
MLA 23420 |
37.8 |
Flinders Diamonds Limited
|
| Johnnies Reward North |
MLA 23421 |
34.7 |
Flinders Diamonds Limited
|
| Johnnies Reward |
ELA 23592* |
72.5 |
Flinders Diamonds Limited
|
| Mud Tank |
EL 10364 |
302 |
Flinders Diamonds Limited
|
| Strangways |
EL 22443 |
973 |
Flinders Diamonds Limited
|
| Alcoota |
EL 22446 |
218 |
Flinders Diamonds Limited
|
| Phlogopite |
EL 22623 |
145 |
Flinders Diamonds Limited
|
*ELA 23592 covers the same area as MLAs 23420 and
23421
Agreements
On 17 July 2002, Flinders Diamonds Limited announced
that on 16 July 2002 it reached agreement with the TeckCominco BHP Billiton
Alliance (The Alliance) to farm out the base metal exploration and mining
rights for all tenements in its Strangways Project, NT.
Exploration for, and development of, diamond deposits
are exempted from the Agreement. Flinders will be free to manage its own
exploration for diamonds and will work with the Alliance to enable mutually
co-operative work programs and negotiations with Traditional Owners. Due
to recent investigations by the Northern Territory Geological Survey and
Geoscience Australia, the Alliance has recognised the potential of the
Strangways Project area for world class deposits of zinc-lead-silver and
copper-gold.
The agreement allows the Alliance to earn 51% equity
in the base-metal rights for an expenditure of $2.0 million. Thereafter
the Alliance may increase its equity to 80% by completion of a bankable
feasibility study.
At this stage, FDL can either contribute to further
expenditure and development at a 20% equity level, convert to 10% free
carried interest with development costs repaid from the project's free
cash flow, or convert to a 1% NSR royalty.
The Alliance will be the manager of the Joint Venture
unless its interest is diluted to less than 50%.
Land Tenure
The entire area is held under Pastoral Leases as illustrated
in Figure 9.The grant of ELA 23592 is considered by the NT government to
be an act attracting the expedited procedure and will be granted unless
a Native Title party lodges an objection before 10 November 2002.
Previous Exploration
Apart from its promising regional setting, the main
reason for Flinders' interest in the Strangways Project area is the presence
of eleven positive indicator results from previous diamond exploration
in the area. Indicator mineral sampling was undertaken over a much larger
area, but the current Project encompasses all the catchments to the eleven
positive sites. Also other areas of interest as suggested by carbonatite
intrusives are covered.
Previous sampling has been carried out by: Stockdale
(1968 to 1973); CRA Exploration (early 1980s); Negri River Corporation
(1983 to 1985); and Normandy Exploration in 1994. There is some confusion
due to the lack of repeatability of some results after resampling. The
terrain is difficult for indicator mineral sampling due to a lack of good
trap sites in low-lying areas. There is also an abundance of metamorphic
heavy minerals such as garnet, diopside and magnetite from the high-grade
metamorphic terrain.
Stockdale could not reconfirm all their own results
and Normandy could not confirm some of Negri's results. However, some of
Negri's results were repeated and microprobe analyses of some of the minerals
collected did give kimberlitic compositions.
On a field visit Flinders noted that good trap sites
might be available if searched for. The site of one of Negri's best results
was re-sampled for orientation purposes.
Proposed Program (Diamonds)
A regolith mapping program is planned to determine which
areas can be effectively sampled for kimberlitic indicator minerals. The
mapping will also determine the southerly extent and depth of the Tertiary
Waite Formation and what influence it has on the distribution of kimberlitic
indicator minerals in the northern half of the project area.
High resolution airborne magnetic data has been
obtained along with Landsat 7 satellite imagery to further define dipolar
magnetic anomalies in the project area that may represent kimberlite intrusives.
Ground checking followed by ground magnetic traverses will be carried out
before drill testing these anomalies. The drilling is expected to begin
in the latter part of the September quarter. Further drainage sampling
in anomalous catchments is also planned to locate the kimberlitic sources
of the kimberlite indicator minerals discovered to date.
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