Exploration Update
Red Rock Resources plc
09 August 2006
RED ROCK RESOURCES PLC
Exploration Update - Manganese Resource defined
Dated: 9 August 2006
Red Rock Resources plc ('Red Rock' or the 'Company') the mineral exploration and
development company focused on advancing iron ore, uranium and manganese
projects in Australia and East Africa, reports the results of the first phase of
its exploration programme at its Manganese project at Mkushi, Zambia.
Following completion of the first phase of a programme of geological fieldwork
on the Chiwefwe manganese deposit near Mkushi, an indicated resource has been
defined at the south west extremity of the mineralised zone.
The manganese zone extends over some 7 km following the fault line, a geological
boundary between the Muva upper basement complex to the north and northeast and
the younger intrusive complex to the south and southeast. The Great North Road
passes through the prospecting license area. Mineralization appears to have
formed as a hydrothermal replacement deposit along faulting and to have a
vertical or sub-vertical orientation.
In the southwest the manganese zone was mapped in surface outcrop and in test
pits over a distance of 550 metres. A northeast extension was traced in outcrop,
trenches and float rock for a further distance of six kilometres. Geological
mapping included excavation of twenty test pits and five trenches with a crew of
16 - 20 diggers. In the south west area manganese in surface outcrop and in test
pits was mapped in detail for a strike length of 550 metres to the northwest
along an average width of 50 metres with a probable depth of 20 metres plus as
observed in production pit no 1.
This gives altogether an indicated volume of 550m by 50m by 20m for a total
volume in the southwest zone of 550,000 cubic metres. Calculating a specific
gravity of 4.3 grams per cubic centimetre gives an indicated tonnage of
2,365,000 million tonnes of manganese ore. The manganese ore is from good clean
quality material mainly in the form of manganite with an Mn content of over 46%.
Further work including the drilling of ten or more holes will now at once take
place with the objectives of raising the south western area to measured category
and defining depth, and of establishing indicated and inferred resources in the
six kilometre northeast extension. Sampling results will be available in the
course of the next weeks.
The Company uses the Canadian Institute of Mining, Metallurgy and Petroleum ('
CIM') Definition Standards for Mineral Resources and Mineral Reserves prepared
by the CIM Standing Committee on Reserve Definitions.
Glossary
Basement: the oldest rocks in a given area; thick foundation of ancient crustal
rocks
Hydrothermal: formed in situ by the action of hot aqueous fluids.
Igneous: rocks resulting from the crystallization of molten magma, either
intrusive or volcanic.
Inferred Mineral Resource: that part of a Mineral Resource for which quantity
and grade or quality can be estimated on the basis of geological evidence and
limited sampling and reasonably assumed, but not verified, geological and grade
continuity, gathered through appropriate techniques from locations such as
outcrops, trenches, pits, workings and drill holes.
Indicated Mineral Resource: that part of a Mineral Resource for which quantity,
grade or quality, densities, shape and physical characteristics, can be
estimated with a level of confidence sufficient to support mine planning and
evaluation of the economic viability of the deposit, based on detailed and
reliable exploration and testing information gathered through appropriate
techniques from locations such as outcrops, trenches, pits, workings and drill
holes that are spaced closely enough for geological and grade continuity to be
reasonably assumed.
Intrusive: of a body of igneous rock that invades older rocks.
Manganite: Manganese oxide hydroxide, iron grey to black in colour, formed at
higher temperatures than other common Manganese minerals, and usually associated
with other manganese oxides.
Measured Mineral Resource: that part of a Mineral Resource for which quantity,
grade or quality, densities, shape, and physical characteristics are so well
established that they can be estimated with confidence sufficient to support
production planning and evaluation of the economic viability of the deposit,
based on detailed and reliable exploration, sampling and testing information
gathered through appropriate techniques from locations such as outcrops,
trenches, pits, workings and drill holes that are spaced closely enough to
confirm both geological and grade continuity.
Mineral Resource: A Mineral Resource is a concentration or occurrence of
minerals in or on the Earth's crust in such form and quantity and of such a
grade or quality that it has reasonable prospects for economic extraction.
Mn: the chemical symbol for the metallic element Manganese.
Muva Supergroup: Upper Basement sedimentary sequence present in Central and
Eastern Zambia
Declaration
The geological information including resource estimates in this report is based
on information compiled by Dr Wolfgang Wiessner, a consulting geologist to Red
Rock. Dr Wiessner has a Diploma in Geology and a Doctorate in Natural Sciences
from the Technical University of Karlsruhe, and is a Member of the Geological
Association of Germany and the OberRhein Geological Association. Dr Wiessner,
who has been practising geology for over 25 years, has sufficient experience
which is relevant to the style of mineralisation and type of deposit under
consideration and to the activity which he is undertaking to qualify as a
qualified person under the AIM Rules.
Dr Wiessner consents to the inclusion in this RNS announcement of the matters
based on his information in the form and context in which it appears.
Enquiries:
Andrew Bell 07766 474849 Red Rock Resources plc Chairman
John Simpson 020 7512 0191 ARM Corporate Finance Ltd Nominated Adviser
Ron Marshman / John 020 7628 5518 City of London PR Limited Public Relations
Greenhalgh
Updates on the Company's activities are regularly posted on Red Rock's website,
www.rrrplc.com.
This information is provided by RNS
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