An anonymous director reports
RIDGESTONE REPORTS HISTORICAL ASSAY RESULTS FROM REBEICO GOLD-COPPER PROJECT, SONORA, MEXICO
Ridgestone Mining Inc. has released the results of historical rock chip samples obtained by the Servicio Geologico Mexicano (SGM) from artisanal workings located within the company's newly acquired Alaska group of mining claims. These claims are located immediately west and northeast of the Rebeico gold-copper project, Sonora, Mexico.
Highlights:
- Increases Rebeico land position to 3,459 hectares;
- Six artisanal workings on new claims documented by SGM report highlighting high-grade gold and copper mineralization;
- Past-producing El Cobre mine, operated by Asarco in 1960s, with extensive development on three levels spanning 180 metres long by 130 metres deep.
The recently acquired claims comprise 10 concessions covering an area of 3,292 hectares located immediately west and northeast of the Rebeico claims. Six artisanal workings have been documented by a Mexican government report, SGM, with high-grade gold and copper mineralization identified from on-vein and waste dump sampling.
Jonathan George of YQ Gold, Ridgestone's exploration partner in Mexico, commented: "These claims not only significantly bolster our land position at Rebeico, but also provide a number of high-priority targets that warrant further investigation and exploration. The grades highlighted by the historical assays are highly encouraging and will be the focus of the upcoming exploration program this fall."
El Cobre
The El Cobre mine was operated by Asarco during the 1960s. Underground development was undertaken on three levels, each approximately 180 metres in length to a depth of 130 metres. Analytical results obtained by the SGM from sampling the vein included 1.67 per cent copper, plus 0.8 gram per tonne (g/t) gold over 1.18 metres.
EL COBRE ASSAY HIGHLIGHTS
Sample Width Au Ag Cu Mo
(m) (g/t) (g/t) (%) (%)
Vein 1.18 0.799 39 1.67 0.12
Vein 1.12 0.666 50 0.51 0.18
Dump 0.499 102 2.41 0.30
Dump 0.350 38 2.07 1.22
Tres Hermanos
Shafts up to 20 metres deep were developed on several tabular mineralized structures to exploit gold-bearing and silver-bearing veins. The main vein is approximately 200 metres in known length, with an average width of 1.3 metres. Highlights included rock chip samples 1.3 metres grading 14.6 g/t gold.
TRES HERMANOS ASSAY HIGHLIGHTS
Sample Width Au Ag Cu
(m) (g/t) (g/t) (%)
Vein 0.166 19 0.16
Vein 1.00 1.366 137 2.72
Vein 1.20 8.132 17 0.07
Vein 1.30 14.598 23 0.06
Vein 1.90 3.399 23 0.14
Vein 2.00 0.566 26 1.21
HW 0.50 2.599 20 0.36
FW 0.80 0.633 8 0.36
FW 1.00 0.399 8 1.00
La Amargosa I and II
The Amargosa I and II workings are classified as mesothermal in origin with abundant copper and iron oxides in quartz veins contained within highly altered andesite. Highlights included 0.7 metre grading 10 g/t gold from sampling of vein material at La Amargosa II.
LA AMARGOSA I AND II ASSAY HIGHLIGHTS
Showing Sample Width Au Ag Cu
(m) (g/t) (g/t) (%)
La Amargosa Dump 0.733 2 0.73
La Amargosa Dump 1.830 2 1.85
La Amargosa II Vein 0.70 9.990 4 3.48
La Amargosa II Vein 0.68 5.860 4 1.85
La Amargosa II Vein 0.71 2.660 7 0.55
La Amargosa II HW 0.80 0.020 1 2.40
La Amargosa II FW 0.60 1.490 4 3.10
La Amargosita
At the Amargosita workings, surface outcrops contain abundant copper and iron mineralization, considered as mesothermal in origin. Two shafts (one collapsed) were developed to access underground drifts. Highlights included sampling of waste dumps which returned 1.56 per cent copper.
LA AMARGOSITA ASSAY HIGHLIGHTS
Sample Width Au Ag Cu
(m) (g/t) (g/t) (%)
Vein 1.50 0.110 26 0.15
Vein 1.30 0.166 73 0.45
Dump 0.097 777 1.56
Campo Seco
Classified by the SGM as epithermal in nature, a quartz vein emplaced within altered andesite was developed in the workings on Campo Seco, including an inclined shaft approximately 18 metres long. Highlights included 0.55 metre grading 7.49 per cent copper with 18 g/t silver.
CAMPO SECO ASSAY HIGHLIGHTS
Sample Width Au Ag Cu
(m) (g/t) (g/t) (%)
HW 0.90 0.066 10 0.36
HW 0.80 0.066 13 0.48
Vein 0.55 0.099 18 7.49
Quality assurance/quality control (QA/QC) disclosure
Rock chip sampling and preliminary geological investigations were undertaken on six old workings located in the Alaska concessions and observations and results were published in a 2005 SGM technical report on the Rebeico H12D54 1:50,000 geologic and mining quadrangle by Morales and Gastelum (2005). The samples were prepared and analyzed in the laboratories of the SGM with methods and procedures considered appropriate for their investigation. Ridgestone Mining is not aware of the QA/QC procedures used by the SGM, or the results of any QA/QC samples that may have been analyzed.
The technical information disclosed in this news release has been reviewed and approved by Steven I. Weiss, CPG, doctor of philosophy, with Mine Development Associates (MDA) of Reno, Nev., United States. Mr. Weiss is a qualified person under National Instrument 43-101 and the author of the technical report prepared by MDA and filed on SEDAR.
About Ridgestone Mining Inc.
Ridgestone is a TSX Venture Exchange-listed junior mineral exploration company with offices in Vancouver, B.C., and Taipei. The company's focus is on precious metals and copper in Sonora, Mexico, and specifically the Rebeico gold-copper project.
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