IRO Inter Rock Minerals Inc

Sentinel Project

Inter-Rock Minerals Inc. (TSX VENTURE:IRO) ("Inter-Rock") announced in November,
2008 that it had completed a soil sampling program at its mineral property in
Humboldt County, Nevada. The Sentinel property is located in northern Humboldt
County, Nevada approximately 80 miles northwest of Winnemucca. Inter-Rock holds
22 claims covering 440 acres. No royalties or lease payments are associated with
the property.


Australian Ores and Minerals (AOM) discovered gold mineralization at Sentinel in
the 1990's by follow-up field examination of Geoscan Mk. II airborne
multispectral scanner anomaly. Their work comprised geological mapping, a closed
space soil geochemical program, analysis of rock chip, trench, and road cut
samples, and ground geophysical studies. Approximately 984 soil samples on 100
foot grid spacing and 1,160 rock chip samples in the area were collected and
analyzed. The rock chip geochemistry returned gold to 7.0 ppm, silver to 39 ppm,
arsenic to 690 ppm, and mercury to 9.7 ppm. The soil samples showed gold up to
2.1 ppm with large areas of plus 100 ppb. One trench reportedly revealed a zone
of 90 feet grading 1.2 ppm gold.


Mapping and interpretation by AOM suggests that the Sentinel gold prospect
occurs in and around a Cretaceous biotite granodiorite stock that has intruded a
series of Permian metavolcanics and metasediments. The stock is several thousand
feet long. The stock and country rock were later intruded by latite porphyry
dikes. NE-SW and NW-SE shear structures with cross cutting faults are also
present in the stock. The Permian rocks are locally hornfelsed and pyrrhotized
adjacent to the biotite granodiorite and latite porphyry intrusive bodies.


Both the intrusive and sediment/volcanic package contain numerous areas of
cross-cutting veinlets, stockworks, and veins of silica, calcite, and iron
oxides. Hydrothermal alteration is prevalent throughout the anomalous spectral
feature with phyllic/argillic alteration up to 50% quartz and 50% sericite. The
alteration and mineralization are indicative of a moderate depth hydrothermal
system.


In late 2008, Inter-Rock completed a soil sampling program at the Sentinel
property. A total of 230 samples were gathered on a 100 foot grid at both the
northern section of the property and at the southern boundary of a previously
outlined anomalous gold zone. The Inter-Rock soil sampling program confirmed the
presence of three anomalous (greater than 30 ppb Au) zones, where a gold anomaly
was defined as a zone containing several contiguous samples containing greater
than 30 ppb gold. All three zones had been identified as anomalous gold zones by
AOM in their previous sampling program.


Anomaly #1 occurs in the northwest of the property and coincides with the
interpreted contact zone between the biotite granodiorite stock and the Permian
volcanic series. It measures approximately 500 feet by 700 feet. Gold values in
soils are greater than 30 ppb with a central zone greater than 50 ppb and a peak
value of 163 ppb. Most of the samples in this anomaly had mercury values greater
than 10 ppb; the peak value was 24 ppb. Arsenic is present at greater than 40
ppb over the entire anomaly, with over half of the anomaly greater than 320 ppb,
and a peak value of 567 ppb. Silver was greater than 0.3 ppm over most of the
anomaly, with a peak value of 5.0 ppm. The highest grade fifteen-foot channel
sample results from two trenches and one roadcut within this area were 0.138,
0.104, and 0.058 oz Au/ton respectively.


Anomaly #2 occurs in the north-central part of the property and coincides with
the latite porphyry dikes. This zone measures about 400 feet by 600 feet. Gold
values in soil are greater than 30 ppb with a central zone of about 100 feet by
100 feet with values greater than 100 ppb; the peak value is 295 ppb. Mercury
values range from background levels to greater than 20 ppb. Arsenic is also
anomalous, with values greater than 40 ppm, but the arsenic anomaly is about 300
feet to the west of the main gold anomaly. Silver is present in anomalous
concentrations over most of the zone, with typical values around 0.3 ppm and a
peak value of 4.3 ppm.


Anomaly #3 is in the southern part of the property in an area that is not as
well mapped as the northern part. It appears to be within the biotite
granodiorite stock or close to its contact with the Permian
metavolcanic/metasedimentary unit. The anomaly is approximately 300 feet by 200
feet. Soil gold values are greater than 30 ppb with a peak value of 100 ppb.
Mercury is greater than 10 ppb, with peak values of 21 ppb. Arsenic is not as
prevalent as in anomalies #1 and #2, with typical values around 10 ppm. Silver
is present at around 0.2 ppm, with a peak value of 0.5 ppm. The highest bedrock
gold value on the property encountered to date is a 15-foot trench channel
sample located in this zone that ran 0.205 oz Au/ton.


All soil samples in Inter-Rock's program were collected from the B horizon. The
samples were analyzed by BSI Inspectorate, an ISO9001 certified lab located in
Sparks, NV. The analyses were performed using fire assaying with aa finish for
Au, cold vapor/aa for Hg, and aqua regia digestion followed by aa analysis for
Ag, As, Cu, Pb, Sb, and Zn.


Planning for a first phase reverse circulation drilling exploration program is
in progress and will be followed by permit application.


To date, there has been insufficient exploration to define a mineral resource
and Inter-Rock cautions that there is a risk that further exploration will not
result in the delineation of a resource.


Stingaree Valley Project

Inter-Rock drilled a three-hole, reverse circulation program at the Stingaree
Valley Property, located about 45 miles East of Fallon, NV, during February
2009. The drill holes were sited to test three different geophysical targets
identified in recent surveys conducted for Inter-Rock by Zonge Geosciences Inc.,
of Sparks, Nevada and in earlier surveys conducted by others, and to verify a
significant grade Au assay reported from an older hole drilled by J.R. Simplot
Company. The geophysical anomalies were well explained by the drilling results
and a thin Ag-Pb vein was intersected in one of the holes, but only one Au
intercept (20 ppb) was encountered in the program. All analyses were performed
by BSI-Inspectorate, an ISO9001-certified lab located in Sparks, NV. Au was
determined by fire/aa finish, Ag by fire/gravity, and other elements by MS/ICP.
Following the receipt of check assay results confirming the original results,
the decision has been made not to renew the property lease.


Douglas H. McGibbon, MS Geol, a Certified Professional Geologist (CPG) with the
American Institute of Professional Geologists and a Qualified Person under NI
43-101, has reviewed and approved the technical content of this news release.
Mr. McGibbon has worked in exploration for gold and other commodities in Nevada
and elsewhere for 30 years.


Certain information regarding Inter-Rock including management's assessment of
future plans and operations, may constitute forward-looking statements under
applicable securities laws and necessarily involve risks associated with mining
exploration and development, volatility of prices, currency fluctuations,
imprecision of resource estimates, environmental and permitting risks, access to
labour and services, competition from other companies and ability to access
sufficient capital. As a consequence, actual results may differ materially from
those anticipated in the forward-looking statements.

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