Mariana Resources Limited
Aim & PLUS: MARL

4th. November 2009

Dos Calandrias Project Report, Santa Cruz Province, Southern
Argentina

A final report on an appraisal of the Dos Calandrias project by
Consultant Dr R Sillitoe, confirming his preliminary findings for the
Calandria Sur and Calandria Norte prospects, is now available on the
Company's website.

www.marianaresources.com/projects_argentina_dos_calandrias.php

On 28 October 2009 the Company reported long drill intercepts of gold
and silver mineralization, including;

CSD 15           91.5m @ 1.6 g/t Au + 17 g/t Ag,
CSD 16           71m @ 1.1 g/t Au + 23 g/t Ag,
CSD 09           54.8m @ 0.8 g/t Au + 10 g/t Ag, and
CSD 13           102m @ 1.2 g/t Au + 17 g/t Ag.

In summary, Calandria Sur is shallow level epithermal gold-silver
mineralization of low sulphidation type hosted in a well developed
hydrothermally brecciated rhyolite dome. Gold-silver mineralization
has an annular, steeply inward dipping form, controlled by the
breccia host and its country rocks.  Highest gold grades to date abut
the silicified breccia and are overprinted by pyrite and marcasite
stockworking.  The long intercepts as reported reflect true bulk
tonnage mineralization hosted in a dome-related hydrothermal breccia,
the first of its type to be discovered in the Deseado Massif
gold-silver province in Santa Cruz.

The recent first pass drilling has tested approximately 400m of the
1500m of the dome perimeter.  Results to date suggest potential for
concealed mineralization elsewhere around the perimeter.  Highest
grade gold-silver mineralization remains open below approximately
100m.

The appraisal by Dr Sillitoe has provided a geological model on which
the next phase of exploration drilling at Calandria Sur will be
based.  Early plans for the next exploration stage include detailed
lag geochemical sampling around the dome perimeter, an Induced
Polarisation geophysical survey and a minimum 2,500m of follow up
drilling.  Subsequent resource definition will require additional
drilling.

                                ENDS



For more information:


                                              RFC Corporate Finance
         Mariana Resources Limited               Limited (Nomad)
John Horsburgh                    +61 2                       +61 2
(Chairman)              9437 4588           Rob Adamson   9250 0041
                                  +593 99                     +61 2
John Sutcliffe (MD)     808080              Will Souter   9250 0050

                                                           St Brides
             FinnCap (Broker)                                (PR)
Joe Lunn (Analyst)                  +44 20  Felicity      +44 20 7236
7600 1658                                   Edwards,      1177
Matthew Robinson                   +44 20
7600 1658                                   Hugo De Salis

Or visit website at www.marianaresources.com
                       ADDITIONAL INFORMATION
Drilling was undertaken by Boart Longyear Argentina. The drill
program was managed by the Argentina Exploration Manager, Dr Gustavo
A. Rodriguez under supervision of Managing Director Mr John
Sutcliffe. Exploration information in this announcement has been
compiled by John Sutcliffe who is a Fellow of the Geological Society
of London, a Chartered Engineer and a Member of the Institute of
Mining and Metallurgy.  Mr Sutcliffe has sufficient experience
relevant to the style of mineralization and types of gold deposit
under consideration and to the activity that he is undertaking to
qualify as a Competent Person as defined in the JORC Code.
Sampling and Analytical Details
All diamond drill core samples are split on geological contacts with
minimum and maximum sample length of 0.4 and 2.1 metres respectively
and represent sawn half HQ-size core.
The programme consisted of 768 samples, (including certified control
standards, quarter core duplicates and blanks). All the samples are
collected under the supervision of the Company geologists. During the
sample handling procedure, the sample shipments are tracked. Core
samples were placed into uniquely labelled sample bags. A record of
the sample location and other specific details is documented in the
sample data base.
All samples were sent to ALS Chemex Labs with preparation facilities
in Mendoza and assayed in Chile for gold and multi element ICP
analyses. Rock sample preparation includes weighing, drying, fine
crushing of entire sample to better than 70% -2mm, split of 250g and
pulverize split to better than 85% passing 75 microns (PREP-31-
DRY-22). The 34 element ME ICP41 package analyses utilize an aqua
regia digestion. Gold analyses for all samples are fire assay and AAS
(Au-AA24, 50g nominal sample weight, range 0.005-10 ppm) with any
results over 10g/t checked using a gravimetric finish (Au-GRA22- 50
gr , range 0.05- 1.000 g/t). Silver grades exceeding 100 g/t were
assayed by fire assay and gravimetric finish (Ag-GRA21, 30g nominal
sample weight, range 5-10,000 ppm).
ALS Chemex's quality system complies with the requirements for the
International Standards ISO 9001:2000 and ISO 17025: 1999
Quality Assurance/Quality Control
All technical information for the Company's Argentina projects is
obtained and reported under a quality assurance and quality control
(QA/QC) program. Four different certified standards were inserted at
an average of one per 21 samples, blanks (in house) at one per 40
samples, while quarter-core duplicates were inserted at intervals of
approximately 45  samples.  A total of 9 % control samples have been
inserted. Assays that meet the QA/QC are incorporated in the Mariana
data base.

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