Post by Designer on Mar 31, 2005 21:34:14 GMT -5
Ripple Lake Diamonds Announces Further Positive Results from 2004 Exploration Program in Nunavut
Thursday March 31, 8:00 am ET
VANCOUVER, March 31 /CNW/ - Ripple Lake Diamonds Inc. (TSX-V: RLD - News), is pleased to announce that, based on the conclusions from new analytical techniques the company plans to organize an airborne geophysical (magnetic and electromagnetic) surveying of the KMD (Brown Lake) area. These surveys will be undertaken in order to delineate possible sources of thousands of pyrope and other kimberlite indicator mineral grains, recovered from the samples collected in 2004.
In addition to the mineralogical study of samples collected in 2004 from the KMD (Brown Lake) area in Nunavut, a new analytical technique was used in studying pyrope grains from these samples. Three sets of G9-pyropes (37-58 grains in each, 145 grains in total) from three different areas were analyzed for trace elements (REE, Rb, Hf, Sc, Ti, Sr, Y, Zr, Ni, Ga and Mn) using the laser ablation ICPMS housed at the University of Cape Town. Based on the Ni-in-garnet thermometer, Dr. H.S. Grutter (Mineral Services Canada Inc.) has established the distribution of temperatures in the garnets from till samples. The distribution of temperatures in the garnets from different samples varies slightly, and is in the range of 800-1070 degrees C.
"A small proportion of grains (14 to 18 % of those analysed would fall inside the diamond stability field at T greater than 1000 degrees C on a 40 mW/m2 model conductive geotherm, but a high proportion (84 to 90 %) would fall inside the diamond stability field at T greater than 850 degrees C on a 35 mW/m2 model conductive geotherm. We conclude that geotherms of about 39 mW/m2 or less would be required for a significant proportion of the analysed garnets to occur inside the diamond stability field," concluded Dr. H.S. Grutter (Mineral Services Canada Inc.).
"The geotherm of about 39-40 mW/m2 is common for most ancient cratons, including Slave Craton. In the area beneath the Ekati mine, the geotherm at the time of the kimberlite eruption was even less, and as 'cool' as 37 mW/m2," comments Dr. Felix Kaminsky. "We do not know the actual geotherm value in the West Churchill Province. However, after the results obtained by Mineral Services Canada Inc. we can assume that even with a lack of G10-garnets in our samples, the kimberlitic sources of the pyropes can be diamondiferous. The mineralogical composition of kimberlitic pipes in adjacent areas confirms this suggestion. Shear Minerals Ltd. discovered 22 kimberlites 20-30 km east of our area. Ten of them are diamondiferous, but none of them contained any G10-pyrope (from hundreds of analyzed grains). All pyropes recovered from Shear Minerals' diamondiferous pipes, according to the materials presented in their annual reports and other materials are G9's."
ON BEHALF OF RIPPLE LAKE DIAMONDS INC.
"Robert Lipsett"
Robert Lipsett
President, CEO and Director
About Ripple Lake Diamonds Inc.
Ripple Lake Diamonds Inc. (TSX-V: RLD - News) is a Canadian-based diamond exploration company focused on the acquisition and assembly of superior exploration assets. Ripple Lake's renowned technical expertise, managed by Dr. Felix Kaminsky, P.Geo, one of the world's leading diamond exploration geologists, is currently engaged in two highly prospective Canadian diamond exploration properties in Ontario and Nunavut. For more information on the Company visit www.ripplelake.com.
The TSX Venture Exchange has not reviewed, and does not accept
responsibility for the adequacy or accuracy of this release.
www.newswire.ca/en/releases/orgDisplay.cgi?okey=12424
For further information
Company Contact: Mr. Robert Lipsett, (604) 484-8264, info@ripplelake.com
Investor Relations Contact: Tangent Management Corp., 1-877-629-0924, (604) 629-0924
Thursday March 31, 8:00 am ET
VANCOUVER, March 31 /CNW/ - Ripple Lake Diamonds Inc. (TSX-V: RLD - News), is pleased to announce that, based on the conclusions from new analytical techniques the company plans to organize an airborne geophysical (magnetic and electromagnetic) surveying of the KMD (Brown Lake) area. These surveys will be undertaken in order to delineate possible sources of thousands of pyrope and other kimberlite indicator mineral grains, recovered from the samples collected in 2004.
In addition to the mineralogical study of samples collected in 2004 from the KMD (Brown Lake) area in Nunavut, a new analytical technique was used in studying pyrope grains from these samples. Three sets of G9-pyropes (37-58 grains in each, 145 grains in total) from three different areas were analyzed for trace elements (REE, Rb, Hf, Sc, Ti, Sr, Y, Zr, Ni, Ga and Mn) using the laser ablation ICPMS housed at the University of Cape Town. Based on the Ni-in-garnet thermometer, Dr. H.S. Grutter (Mineral Services Canada Inc.) has established the distribution of temperatures in the garnets from till samples. The distribution of temperatures in the garnets from different samples varies slightly, and is in the range of 800-1070 degrees C.
"A small proportion of grains (14 to 18 % of those analysed would fall inside the diamond stability field at T greater than 1000 degrees C on a 40 mW/m2 model conductive geotherm, but a high proportion (84 to 90 %) would fall inside the diamond stability field at T greater than 850 degrees C on a 35 mW/m2 model conductive geotherm. We conclude that geotherms of about 39 mW/m2 or less would be required for a significant proportion of the analysed garnets to occur inside the diamond stability field," concluded Dr. H.S. Grutter (Mineral Services Canada Inc.).
"The geotherm of about 39-40 mW/m2 is common for most ancient cratons, including Slave Craton. In the area beneath the Ekati mine, the geotherm at the time of the kimberlite eruption was even less, and as 'cool' as 37 mW/m2," comments Dr. Felix Kaminsky. "We do not know the actual geotherm value in the West Churchill Province. However, after the results obtained by Mineral Services Canada Inc. we can assume that even with a lack of G10-garnets in our samples, the kimberlitic sources of the pyropes can be diamondiferous. The mineralogical composition of kimberlitic pipes in adjacent areas confirms this suggestion. Shear Minerals Ltd. discovered 22 kimberlites 20-30 km east of our area. Ten of them are diamondiferous, but none of them contained any G10-pyrope (from hundreds of analyzed grains). All pyropes recovered from Shear Minerals' diamondiferous pipes, according to the materials presented in their annual reports and other materials are G9's."
ON BEHALF OF RIPPLE LAKE DIAMONDS INC.
"Robert Lipsett"
Robert Lipsett
President, CEO and Director
About Ripple Lake Diamonds Inc.
Ripple Lake Diamonds Inc. (TSX-V: RLD - News) is a Canadian-based diamond exploration company focused on the acquisition and assembly of superior exploration assets. Ripple Lake's renowned technical expertise, managed by Dr. Felix Kaminsky, P.Geo, one of the world's leading diamond exploration geologists, is currently engaged in two highly prospective Canadian diamond exploration properties in Ontario and Nunavut. For more information on the Company visit www.ripplelake.com.
The TSX Venture Exchange has not reviewed, and does not accept
responsibility for the adequacy or accuracy of this release.
www.newswire.ca/en/releases/orgDisplay.cgi?okey=12424
For further information
Company Contact: Mr. Robert Lipsett, (604) 484-8264, info@ripplelake.com
Investor Relations Contact: Tangent Management Corp., 1-877-629-0924, (604) 629-0924
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