Xtierra Inc. (TSX VENTURE: XAG) ("Xtierra" or the "Company"), is
pleased to report further analyses from drilling completed at its
Bilbao project, Zacatecas, Mexico indicating additional high grade
silver intercepts immediately south of the Bilbao polymetallic
resource and the discovery of a new zone of silver and base metal
mineralisation located approximately 1.4 kilometres to the
northeast of the Bilbao deposit.
Bilbao South High Grade Silver Zone
In drilling in the southern part of the Bilbao deposit, Xtierra
previously reported (June 27, 2011) preliminary assay results for
six separate mineralized veins and/or fault-fillings. Further
intersections have been made in four additional drill-holes. Four
of the mineralized fault structures have a north-northwest trend
while another two veins strike north-northeastwards; the former
have strong base-metal values while the later contain significantly
anomalous silver values previously reported up to 664g/t silver but
now recorded as high as 4,600g/t silver (over a 0.35m width) with
an intersection of 2.45 metres averaging 1,623g/t silver (hole
X40-1), including 3,340g/t silver over 0.60m (refer attached table
of results). Hole X40-1 was prematurely halted while still in
mineralisation due to technical difficulties experienced with water
loss. The actual mineralised intersection is expected to be
wider.
In addition to the fault/vein hosted mineralization encountered
in drill-holes X40-1, X87-1 and X86C, drill-hole X93 intersected
the zone of manganiferous, brecciated limestone found previously to
the north in DDH's CG4, X85 and X84 (all part of drilling within
the main Bilbao deposit), thereby extending this zone of stratiform
mineralization a further 70m to the south of that previously known
and which remains open-ended.
Drill-holes X86-C and X93 intersected a considerable thickness
of limestone underneath a 150 metre capping of basalt and sandstone
demonstrating that the horizon hosting the main mineralized body at
Bilbao persists to the south and west. Since both of these
drill-holes aremineralised, there is excellent potential that
additional mineralisation will be discovered.
The three-dimensional morphology of the silver veins is not yet
fully understood. Although the intersections are high angle
intercepts, insufficient drilling has been completed on each vein
structure to permit the precise calculation of true width. The
table appended below indicates intersected width which is likely to
be within 15% of true width.
The veins, which are comprised of amethystine quartz with
calcite, are closely related with the contact of the limestone
horizons (which host the main Bilbao deposit) with the main La
Blanca granodioritic batholith. Xtierra is planning immediate
follow-up drilling on this developing high grade silver zone which
may represent a feeder system to the main Bilbao skarn-replacement
deposit.
Ardillas Prospect
The Ardillas prospect is located about 1.4 kilometres northeast
of the Bilbao deposit and was first identified through soil
geochemical surveys which resulted in a coincidental
lead-zinc-silver-arsenic anomaly of dimensions 850 x 500m over the
central part of the poorly exposed La Blanca granodiorite.
Subsequent pitting and trenching within the core of the geochemical
anomaly resulted in the discovery of hedyphane (lead
chlor-arsenate) encrusted galena veinlets within granite. A single,
preliminary, inclined (-60 degrees ) drill hole (X-91) has
intersected four veins with the thickest intersection of 4.25
metres at an average grade of 1.24% lead, 1.27% zinc and 47.7g/t
silver at a vertical depth of about 150 metres. A further zone of
0.65 metres was intersected at about 96 metres vertical depth
averaging 2.53% lead, 3.47% zinc, 0.33% copper and 104.6g/t silver.
Anomalous tin values have also been recorded.
The mineralization at Ardillas is related to a vein
swarm/dissemination adjacent to a controlling regional
west-northwest trending fault structure paralleling the San Jose
fault structure which, 3.3km to the north, hosts silver
mineralization currently being worked by Arian Silver Corporation
("Arian"). Because only one hole has been drilled so far, the full
extent of the mineralization is not yet known but in a regional
context, the Ardillas veins appear to have similarities to San Jose
vein where Arian operates a 500 tpd underground mine with a
reported resource (August 2008) of 2.196 Mt grading 127.71g/t Ag,
0.51% Pb, and 0.88% Zn (Indicated) and 11.19 Mt grading 93.84g/t
Ag, 0.39% Pb, and 0.83% Zn (Inferred). At San Jose the vein system
crops out over approximately six km in length in a west-northwest
orientation with an average width of 2.5 m. Arian reports that more
than one vein can be present and in other locations a stockwork of
quartz veinlets has developed in the wallrock adjacent to the main
vein. Xtierra is planning further follow-up drilling at
Ardillas.
Comment
Commenting on the latest drill results, Xtierra's CEO, Terence
McKillen, said "The additional, very high grade silver values
within the vein structures and breccias at the southern end of the
Bilbao deposit provides excellent potential for identifying
additional silver (and base metal) resources for the deposit. These
high grade zones suggest the presence of silver-rich feeder zones
to the main skarn-replacement body. The morphology and disposition
of these silver-rich fault zones is, as yet, not fully defined but
a further drilling program is planned to investigate the zone in
greater detail." Mr. McKillen added, "We are also very excited
about the new discovery at Ardillas which has all of the earmarks
of a San Jose-type vein system. It is located within 1.4 km of the
main Bilbao deposit and could, in time, provide additional
resources to the main project. Further drilling is also planned at
Ardillas."
Analytical Method
Samples from half-core were prepared at the Stewart Group
laboratory in Zacatecas and initially analyzed for 38 element
content using ICP-MS (inductively coupled plasma - mass
spectrometry) by the Stewart Group (Eco-Tech Laboratory) in
Kamloops, British Columbia. Values exceeding the limits of
detection are automatically re-analyzed by Fire Assay or Atomic
absorption spectrometry (AAS) methods respectively. Standards and
blanks were used regularly for quality control.
----------------------------------------------------------------------------
From To Intersected Ag Pb Zn Pb+Zn Cu
Drill-hole # (m) (m) Width (m) (g/t) (%) (%) (%) (%)
----------------------------------------------------------------------------
(i)X40-1 179.00 180.00 1.00 228.00 0.06 0.05 0.11 0.03
----------------------------------------------------------------------------
(i)X40-1 196.55 198.00 1.45 68.90 3.49 0.39 3.88 0.86
----------------------------------------------------------------------------
X40-1 207.95 211.75 3.80 23 2.71 2.12 4.83 0.25
----------------------------------------------------------------------------
X40-1 218.65 222.15 3.55 71.2 3.09 2.00 5.09 0.20
----------------------------------------------------------------------------
(i)X40-1 294.70 295.00 0.30 100.00 2.92 1.26 4.18 0.68
----------------------------------------------------------------------------
(i)X-40-1 312.60 313.65 1.05 28.00 1.81 1.01 2.82 0.01
----------------------------------------------------------------------------
X40-1 413.65 416.00 2.35 89.0 4.40 1.32 5.72 0.06
----------------------------------------------------------------------------
X40-1 420.45 423.00 2.55 329.0 0.07 0.52 0.59 0.01
----------------------------------------------------------------------------
(i)incl 421.95 423.00 1.05 690.00 0.11 1.14 1.25 0.02
----------------------------------------------------------------------------
(i)X40-1 424.05 426.50 2.45 1,623.35 0.54 0.76 1.30 0.02
----------------------------------------------------------------------------
(i)incl 425.55 426.15 0.60 3,340.00 0.76 0.28 1.04 0.04
----------------------------------------------------------------------------
(i)incl 426.15 426.50 0.35 4,600.00 1.94 3.70 5.64 0.04
----------------------------------------------------------------------------
X86A 212.00 217.00 5.00 114.7 1.12 0.76 1.88 0.08
----------------------------------------------------------------------------
X86A 284.50 285.60 1.05 127.6 9.96 11.43 21.39 0.27
----------------------------------------------------------------------------
X86A 374.50 376.00 1.50 230.0 0.16 0.78 0.94 0.01
----------------------------------------------------------------------------
X86A 386.00 387.00 1.00 218.0 0.19 0.94 1.13 0.01
----------------------------------------------------------------------------
X86A 396.00 396.55 0.55 218.0 0.06 0.52 0.58 0.01
----------------------------------------------------------------------------
X86A 407.35 408.40 1.05 664.3 0.20 2.20 2.40 0.01
----------------------------------------------------------------------------
X86B 243.50 248.15 4.65 97.9 4.85 10.10 14.95 0.31
----------------------------------------------------------------------------
X86B 255.00 258.45 3.45 24.9 2.07 1.48 4.18 0.11
----------------------------------------------------------------------------
X86B-1 243.90 256.00 12.10 109.4 4.17 4.91 9.08 0.63
----------------------------------------------------------------------------
(i)X86-C 249.80 251.75 1.95 69.75 0.09 0.06 0.14 0.01
----------------------------------------------------------------------------
(i)X86-C 263.50 266.20 2.70 245.45 0.11 0.04 0.15 0.01
----------------------------------------------------------------------------
(i)X86-C 271.05 271.45 0.40 49.90 0.07 0.07 0.14 0.04
----------------------------------------------------------------------------
(i)X86-C 291.55 293.60 1.75 125.74 6.33 3.03 9.36 1.03
----------------------------------------------------------------------------
(i)X93 192.00 196.00 4.00 268.50 0.11 0.05 0.16 0.01
----------------------------------------------------------------------------
X87-1 267.00 268.00 1.00 29.6 2.55 3.10 5.65 0.01
----------------------------------------------------------------------------
X87-1 386.60 389.00 2.40 335.5 1.59 1.11 2.70 0.34
----------------------------------------------------------------------------
(i)incl 386.60 387.00 0.40 698.00 0.46 2.52 2.98 0.02
----------------------------------------------------------------------------
(i)incl 387.00 388.00 1.00 410.00 0.25 1.52 1.77 0.01
----------------------------------------------------------------------------
X87-1 413.75 415.30 1.55 578.7 0.20 0.33 0.53 0.01
----------------------------------------------------------------------------
(i)incl 413.75 415.00 1.25 684.00 0.24 0.38 0.62 0.01
----------------------------------------------------------------------------
(i)X87-1 422.00 422.40 0.40 122.00 0.07 0.20 0.27 0.00
----------------------------------------------------------------------------
(i)X87-1 430.00 431.00 1.00 286.00 0.14 0.39 0.53 0.00
----------------------------------------------------------------------------
A summary of the main mineralized zones intersected at Bilbao
South((i) denotes new data)
----------------------------------------------------------------------------
From To Intersected Ag Pb Zn Pb+Zn Cu
Drill-hole # (m) (m) Width (m) (g/t) (%) (%) (%) (%)
----------------------------------------------------------------------------
(i)X91 122.75 123.15 0.60 50.20 1.61 0.97 2.58 0.04
----------------------------------------------------------------------------
(i)X91 124.10 124.20 0.10 25.80 0.68 2.10 2.78 0.03
----------------------------------------------------------------------------
(i)X91 125.00 125.65 0.65 104.58 2.53 3.47 6.00 0.33
----------------------------------------------------------------------------
(i)X91 187.05 191.30 4.25 47.71 1.24 1.27 2.51 0.06
----------------------------------------------------------------------------
(i)X91 197.65 198.15 0.50 49.40 1.10 1.47 2.57 0.03
----------------------------------------------------------------------------
A summary of the Ardillas drilling ((i) denotes new data)
Qualified Person
Information of a scientific or technical nature contained in
this release has been prepared by or under the supervision of
Terence N. McKillen, P.Geo., Chief Executive Officer, Gerald J.
Gauthier, P.Eng., Chief Operating Officer and Dr. Anthony C.
Gallon, C.Eng., Chief Geologist, all 'Qualified Persons' within the
meaning of National Instrument 43-101 - Standards of Disclosure for
Mineral Projects of the Canadian Securities Administrators.
About Xtierra Inc.
Xtierra Inc. is a Toronto based exploration and development
company listed on the TSX Venture Exchange under the symbol "XAG".
There are 103,272,142 shares issued and outstanding. The Company is
completing a feasibility study on its Bilbao
silver-zinc-lead-copper project in Zacatecas, Mexico. Xtierra's
objective is to become a mid-tier producer of precious and base
metals through the development of its Bilbao project as well as
through exploration, organic growth and M & A
opportunities.
Neither the TSX Venture Exchange nor its Regulation Services
Provider (as that term is defined in the policies of the TSX
Venture Exchange) accepts responsibility for the adequacy or the
accuracy of this release.
Contacts: Xtierra Inc. Terence McKillen President & Chief
Executive +1 (416) 362-8243 Xtierra Inc. Tim Gallagher Director +1
(416) 925-0090 Xtierra Inc. Alejandro Alaniz Director Finance &
Administration (Mexico) +52 (492) 925-0804 www.xtierra.ca
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