Resource increases by 25% at Kiziltepe
28 October 2010
AIM / PLUS Markets: AAU
RESOURCE INCREASES BY 25% AT KIZILTEPE
Ariana Resources plc ("Ariana" or "the Company"), the gold exploration and
development company focused on Turkey, is pleased to announce the completion of
its revised independent JORC mineral resource estimate* for its Kiziltepe
deposit in Balikesir Province, western Turkey.
Highlights:
* Wardrop, A Tetra Tech Company ("Wardrop") estimates a global JORC compliant
mineral resource of 232,900 oz gold equivalent** in all categories at a cut-
off grade of 1 g/t Au
* Total Measured and Indicated resource increased to 206,500 oz gold
equivalent**
* Measured resources fall completely within preliminary pit shapes established
for a gold price of US$800 per oz and a silver price of US$14 per oz
* High grade zones continue below modelled pit-bottom at Arzu South and Arzu
North, and new areas for potential resource growth have been identified
* Total resource inventory of the Company stands at approximately 448,000 oz
gold equivalent (up from 401,000 oz gold equivalent)
Dr. Kerim Sener, Managing Director, commented:
"The revised JORC-compliant mineral resource estimate for Kiziltepe is in line
with expectations and brings us toward our targeted global resource base of
250,000 oz gold equivalent. Â As the new estimate represents the foundations of
our continuing work programmes, it was important to ensure that the estimate
incorporated economic parameters derived from our scoping study. Â Most
importantly, the increase to the Measured and Indicated components of the
estimate provides enhanced confidence in the scale of the potentially mineable
resource at Kiziltepe.
Our last round of drilling was focused on the Banu and Derya veins with the aim
of converting existing Inferred resources to at least the Indicated category.
 This work resulted in a near 1:1 conversion between the two categories, which
is an excellent result. Â In addition to this, the drilling database for
Kiziltepe was completely reconstituted and the geological models for Arzu North,
Banu and Derya were totally revised in line with new geological understanding
gained during trial mining. Â The geological modelling and addition of low grade
altered wallrocks in to the resource estimate has also proven worthwhile, as
this material has the potential to further increase the open pit economics."
* All resource figures contained in this announcement are reported as both net
and gross with respect to the Red Rabbit Joint Venture and Ariana remains the
operator of this project.
** Gold equivalents are based on the following equation:
{(Ag g/t*Ag Recovery*Ag Price*0.032)/Au oz Price}/Au Recovery
Details of Resource Estimate
The Company has completed over 16,340m of diamond and reverse circulation
drilling and 960m of channel sampling at surface. Â The Company has ensured a
high quality of sample preparation and laboratory results, resulting in grade
and density data which can support a JORC compliant resource estimate (Table 1).
Four main mineralised structures that have been drilled and channel sampled
sufficiently enough to support Mineral Resources in the Indicated and Measured
categories have been incorporated in the three-dimensional geological model,
namely, Arzu South, Arzu North, Derya and Banu (Figure 1). Â Additional modelling
was undertaken on several subsidiary veins on which preliminary exploration
drilling has been completed. Â This modelling included the Derya West, Aybor,
Arzu Far North and Ceylan veins.
The resource was estimated by Ordinary Kriging (OK), with an Inverse Distance
Squared (ID2) estimation used to validate the OK results. Â The deposit was
estimated for Au and Ag inside of the geologically controlled mineralised zone,
consisting of low-sulphidation epithermal quartz vein system, and a wider
stockwork alteration halo. Â An economically defined lower cut-off grade of 1 g/t
Au was used to define the final resource estimate. Â Different top cuts were
established for individual veins and varied from 17 g/t Au to 5 g/t Au.
Resource classification was controlled by variographic search parameters with
resources contained within a preliminary optimised pit shape falling into to the
'Measured' category. Â Resources outside of the optimised pit-shell were
categorised as either 'Indicated' or 'Inferred' based on the search pass used in
the estimation process. Â Material within the estimation showing low sample data
density was also included into the 'Inferred' category, specifically extensions
along strike at Banu and Derya. Â Density was estimated using Nearest Neighbour
(NN) methods and where absent, a default value of the average for the estimation
was used.
The Whittle pit optimisation was undertaken using a conservative price for gold
and silver, at US$800/oz and US$14/oz respectively. Â Recoveries of 88% and 78%
for gold and silver have been established via test work and were included in the
optimisation calculations. Â The current 5-10 year consensus price forecasts for
gold and silver are higher than those used in the pit optimisation work, but the
Company considers that the price levels used provide some mitigation against any
downside risk.
Figure 1: Preliminary pit shape (in purple) and mineralisation block model
coloured according to gold grade, shows the results of the estimation above a
1g/t Au cut-off-grade.
Table 1: Summary JORC Mineral Resource Estimate for the Kiziltepe deposit at a
1 g/t Au cut-off grade. Â Gold equivalents are the sum of the gold ounces and the
gold equivalent ounces of silver based on the following equation: {(Ag g/t*Ag
Recovery*Ag Price*0.032)/Au oz Price}/Au Recovery.
+----------+-----------+-----------+-----------+-------+---------+-------------+
| | |Grade Au |Grade Ag | | |Au equiv. |
|VEIN |Tonnage (t)|(g/t) |(g/t) |Au (oz)|Ag (oz) |(oz) |
+----------+-----------+-----------+-----------+-------+---------+-------------+
|Measured | 782,942| 4.1| 51.4|103,319|1,294,836| 123,311|
+----------+-----------+-----------+-----------+-------+---------+-------------+
|Indicated1| 619,029| 2.3| 44.8| 46,496| 891,368| 60,258|
+----------+-----------+-----------+-----------+-------+---------+-------------+
|Inferred2 | 164,998| 1.8| 40.9| 9,752| 217,005| 13,101|
+----------+-----------+-----------+-----------+-------+---------+-------------+
|Inferred3 | 116,000| 1.5| 51.3| 5,505| 191,446| 8,457|
+----------+-----------+-----------+-----------+-------+---------+-------------+
+----------+-----------+-----------+-----------+-------+---------+-------------+
| | |Grade Au |Grade Ag | | |Au equiv. |
|HALO |Tonnage (t)|(g/t) |(g/t) |Au (oz)|Ag (oz) |(oz) |
+----------+-----------+-----------+-----------+-------+---------+-------------+
|Indicated | 352,819| 1.6| 25.8| 18,430| 293,007| 22,954|
+----------+-----------+-----------+-----------+-------+---------+-------------+
|Inferred | 76,059| 1.4| 33.7| 3,544| 82,341| 4,816|
+----------+-----------+-----------+-----------+-------+---------+-------------+
+----------+-----------+-----------+-----------+-------+---------+-------------+
|TOTAL M&I | 1,754,789| 3.0| 43.9|168,245|2,479,211| 206,523|
+----------+-----------+-----------+-----------+-------+---------+-------------+
+----------+-----------+-----------+-----------+-------+---------+-------------+
|GLOBAL | 2,111,847| 2.8| 43.7|187,046|2,970,002| 232,903|
+----------+-----------+-----------+-----------+-------+---------+-------------+
NOTES:
1 Includes mineralisation classified as Indicated at the satellite Kepez
prospect.
2 Includes mineralisation classified as Inferred from the Arzu South, Arzu
North, Banu and Derya veins.
3 Includes mineralisation classified as Inferred from the subsidiary Derya West,
Aybor, Arzu Far North and Ceylan veins.
*Some of the Halo (alteration) material will be necessarily mined and may be
processed at the end of the mine life but Wardrop considers more studies are
required to determine the nature of the mineralisation.
Contacts:
Ariana Resources plc Tel: 020 7407 3616
Michael Spriggs, Chairman
Kerim Sener, Managing Director
Beaumont Cornish Limited Tel: 020 7628 3396
Roland Cornish
Alexander David Securities Limited Tel: 020 7448 9820
Nick Bealer / David Scott
Loeb Aron & Company Ltd Tel: 020 7628 1128
Peter Freeman / Frank Lucas
Editors' note:
The information in this document that relates to Mineral Resources is based on a
resource estimate compiled or supervised by Mr Paul Gribble, a full time
employee and Senior Geologist of Wardrop Engineering Inc. Â Mr Gribble 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 Competent Person as defined in the 2004 Edition of the
"Australasian Code for Reporting of Exploration Results, Mineral Resources, and
Ore Reserves" (JORC Code). Â Mr Gribble consents to the inclusion in the report
of the matters based on his information in the form and context in which it
appears.
Dr Kerim Sener, BSc (Hons), MSc, PhD, is the Managing Director of Ariana
Resources plc. Â A graduate of the University of Southampton in Geology, he also
holds a Master's degree from the Royal School of Mines (Imperial College,
London) in Mineral Exploration and a doctorate from the University of Western
Australia. Â He is a Fellow of The Geological Society of London and has worked in
geological research and mineral consultancy in Southern Africa and Australia.
 He has read and approved the technical disclosure in this regulatory
announcement.
About Ariana Resources
Ariana is an exploration and development company focused on epithermal gold-
silver and porphyry copper-gold deposits in Turkey. Â The Company is exploring a
portfolio of prospective licences selected on the basis of its in-house
geological and remote-sensing database, on its own in western Turkey and in
Joint Venture with European Goldfields Limited in north-eastern Turkey.
The Company's flagship assets are its Sindirgi and Tavsan gold projects. Â Both
projects contain a series of prospects, within two prolific mineralised
districts in the Western Anatolian Volcanic and Extensional (WAVE) Province in
western Turkey. Â This Province hosts the largest operating gold mines in Turkey
and remains highly prospective for new porphyry and epithermal deposits. Â These
core projects, which are separated by a distance of 75km, are presently being
assessed as to their economic merits. Â The total resource inventory of the
Company stands at 448,000 ounces of gold equivalent.
Loeb Aron & Company Ltd. and Alexander David Securities Limited are joint
brokers to the Company and Beaumont Cornish Limited is the Company's Nominated
Adviser.
For further information on Ariana you are invited to visit the Company's website
atwww.arianaresources.com.
Glossary of Technical Terms
"Au" the chemical symbol for gold;
"cut-off grade" The lowest grade, or quality, of mineralised material that
qualifies as economically mineable and available in a given deposit. May be
defined on the basis of economic evaluation, or on physical or chemical
attributes that define an acceptable product specification;
"g/t" grammes per tonne;
"low-sulphidation" a style of gold mineralisation which is typically found
distal to volcanic centres and is characterised by adularia-sericite alteration
and quartz veins;
"Indicated resource" a part of a mineral resource for which tonnage, densities,
shape, physical characteristics, grade and mineral content can be estimated with
a reasonable level of confidence. It is based on exploration, sampling and
testing information gathered through appropriate techniques from locations such
as outcrops, trenches, pits, workings and drill holes. The locations are too
widely or inappropriately spaced to confirm geological and/or grade continuity
but are spaced closely enough for continuity to be assumed;
"Inferred resource" a part of a mineral resource for which tonnage, grade and
mineral content can be estimated with a low level of confidence. It is inferred
from geological evidence and has assumed, but not verified, geological and/or
grade continuity. It is based on information gathered through appropriate
techniques from locations such as outcrops, trenches, pits, workings and drill
holes that may be limited or of uncertain quality and reliability;
"Inverse Distance Squared" a conventional mathematical method used to calculate
mineral resources. Â Near sample points provide a greater weighting than samples
further away for any given resource block;
"JORC" the Joint Ore Reserves Committee;
"m"Metres;
"Measured resource" a part of a Mineral Resource for which tonnage, densities,
shape, physical characteristics, grade and mineral content can be estimated with
a high level of confidence. Â It is 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. Â The
locations are spaced closely enough to confirm geological and grade continuity;
"Nearest Neighbour" a methodology used to derive the value of an attribute from
surrounding sample data on the basis of point-to-point proximity;
"Ordinary Kriging" is a geostatistical approach to resource estimation. Â Instead
of weighting nearby data points by some power of their inverted distance, OK
relies on the spatial correlation structure of the data to determine the
weighting values. Â This is a more rigorous approach to modelling, as correlation
between data points determines the estimated value at an unsampled point;
"oz" Ounces;
"porphyry" an igneous rock with larger crystals contained within a matrix of
much smaller crystals;
"stockwork" a mineral deposit in the form of a branching network of small
irregular veins;
"top cut" the maximum gold content for samples used to calculate an average gold
content for a resource;
"variographic" the use of semi-variograms (a mathematical technique) as part of
the geostatistical methodology used to derive resource estimates;
"Whittle" computer software that uses the Lerch-Grossman algorithm, which is a
3-D algorithm that can be applied to the optimisation of open-pit mine designs.
 The purpose of optimisation is to produce the most cost effective and most
profitable open-pit design from a resource block model.
Ends
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Source: Ariana Resources plc via Thomson Reuters ONE