ROME´S DON LUIS GREISEN-PORHYRY SILVER-TUNGSTEN PROPERTY HAS A GREAT ADDRESS AS PART OF THE "GREAT CLUSTER" OF LARAMIDE PORPHYRY COPPER-MOLYBDENUM DEPOSITS IN ARIZONA, NEW MEXICO AND S
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ROME RESOURCES LTD.
[TSX-VEN: RMR & FRANKFURT: 33R]
205 - 16055 Fraser Highway
Surrey, B.C. V4N 0G2
WEB: www.RomeResources.com CH Valoren No: 699 171
Email: info@RomeResources.com WKN: 886289
FAX: +(604) 507-2187 TEL: +(604) 507-2181
NEWS RELEASE #03: MARCH 30TH 2011
ROME´S DON LUIS GREISEN-PORHYRY SILVER-TUNGSTEN PROPERTY
HAS A GREAT ADDRESS AS PART OF THE "GREAT CLUSTER"
OF LARAMIDE PORPHYRY COPPER-MOLYBDENUM DEPOSITS
IN ARIZONA, NEW MEXICO AND SONORA
Rome Resources Ltd. is pleased to announce results of uranium lead dating of
zircons from greisen-porphyry on the Don Luis Property, Sonora, Mexico. A Late
Cretaceous date of 67.7 + 0.6 million years (Ma, Fig. A1) was obtained by
Professor J.K. Mortenson using laser ablation - ICP-MS methods at the Pacific
Centre for Isotopic and Geochemical Research at The University of British
Columbia. Don Luis, about 45 km north-northeast of Hermosillo the capital of
Sonora, has the same age as deposits in the "Great Cluster" (Fig. A1), and
occurs at its southern edge. The "Great Cluster" refers to the Laramide (75 to
50 Ma) group of porphyry copper-molybdenum deposits in Arizona, western New
Mexico and Sonora (Fig. A2) that are remarkable because they define one of the
richest copper provinces on Earth! This confirms-based on deposit type, age and
location-the great address of Rome´s Don Luis Property.
Recently revised geology of the Don Luis Silver-Tungsten (plus molybdenum, tin
and copper) Property is in Figure A3. Three large greisen zones, each about 500
meters in diameter, mark an intense alteration and mineralization trend that is
about three kilometers long east-west and a kilometer wide north-south. The Late
Cretaceous date of the mineralization and porphyry at the deposit is here
defined (Fig. A1). But another important feature is the unconformity that marks
a mid-Tertiary (35 to 30 Ma) erosion surface or pediplane. This is of particular
significance because surface leaching of copper at this erosion surface could
have formed a copper-rich supergene-enrichment blanket at depth. This is
supported by: (i) supergene copper enrichment zones at many of the porphyry
deposits within the "Great Cluster" [e.g. Cananea and La Caridad: Fig. A2], (ii)
two 400 meter deep drill holes at Don Luis that were wholly within oxide-
limonite cap rock marked by supergene, oxide silver concentrations, and (iii)
moderate values of copper (commonly about 100 ppm) in red, earthy-hematitic
limonite after sulfides at surface-features that often mark prior chalcocite-
copper enrichment. Abundant "brain rock" (UST-texture) attests to its hydrous,
end-stage magmatic origin. Lithophile related tungsten, molybdenum and minor tin
indicate a North American Plate basement contribution to the magmatic system.
Rome Resources Ltd. is a Canadian mineral exploration company focused on gold,
silver, copper and tungsten projects in Argentina and Mexico. It is publicly
traded on the TSX Venture Exchange under the symbol RMR, and on the Frankfurt
Exchange as 33R. Company and exploration details are available at:
http://www.romeresources.com (click: "What´s New" [SEDAR News Releases] and
"Projects").
On behalf of the Board of Directors
"Colin I. Godwin"
Colin I. Godwin, PhD, PEng, PGeo
President and Director of Rome Resources Ltd.
Professor Emeritus, The University of British Columbia
Telephone: +(604) 939-6507, Email:cigodwin@yahoo.com
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 accuracy of this News Release. Colin I.
Godwin, PhD, PEng, PGeo, a qualified person under National Instrument 43-101,
has verified data disclosed in this release. This News Release may contain
forward-looking statements. Forward-looking statements are statements which
relate to future events. These statements are only predictions and involve known
and unknown risks, uncertainties and other factors that may cause our or our
industry´s actual results, levels of activity, performance or achievements to be
materially different from any future results, levels of activity, performance or
achievements expressed or implied by these forward-looking statements. While
these forward-looking statements, and any assumptions upon which they are based,
are made in good faith and reflect our current judgment regarding the direction
of our industry, actual results will almost always vary, sometimes materially,
from any estimates, predictions, projections, assumptions or other future
performance suggested herein.
APPENDIX A
Figure A1. The zircon radiometric date for the Don Luis greisen is 67.7 + 0.6
Ma. This Late Cretaceous date (red) plots with those of the Laramide magmatic
belt (mainly 75 to 50 Ma) that characterizes the "Great Cluster" of porphyry
copper-molybdenum deposits in Arizona, New Mexico and Sonora (Fig. A2).
Figure A2. The "Great Cluster" of porphyry copper deposits (blue) occurs in
Arizona, New Mexico and Sonora. The largest deposit occurs less than 100
kilometers north of Don Luis at Cananea (Mineral Park is geologically similar).
Don Luis is within of one the richest clusters of copper deposits in the world!
Figure A3. Geology of the Don Luis Silver-Tungsten (+ molybdenum, tin and
copper) Griesen-Porphyry Property, North-Central Sonora, Mexico. The greisen
zones (yellow), each about 500 meters in diameter, extend along a belt about
three kilometers east-west and one kilometer north-south. Abundant "brain rock"
(UST-texture) attests to its hydrous, end-stage magmatic origin. Lithophile
related tungsten, molybdenum and minor tin indicate a North American Plate
basement contribution to the magmatic system.
Figure A1:
http://hugin.info/147237/R/1501908/437119.jpg
Figure A3:
http://hugin.info/147237/R/1501908/437121.jpg
Figure A2:
http://hugin.info/147237/R/1501908/437120.jpg
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Source: Rome Resources Ltd via Thomson Reuters ONE
[HUG#1501908]
