To: Veritas who wrote (510 ) 7/8/1998 10:51:00 PM From: Chuca Marsh Read Replies (1) | Respond to of 1044
Supplemental - I did not ecen search this word Chalcocite but maybe someone else has the time ...I was re reading Microcluster Thread and he posted at Post #2 exchange2000.com and lead me to these scrapes: From a DEAD THREAD comes some very interesting topics / writings on drillings of special note is Chalcocite RE Jaba PR today on same element and the HIGH LIGHT that it showed in this discussion:<<..Preliminary logging shows the presence of "live limonite" suggesting the possibility of an enriched copper sulfide zone (chalcocite blanket) below the current level of drilling...>> and in the BODY below...<<... The Ujina discovery, for example, was two sequential squares of very clean gravel with (even under high power) a lot of little black specks in a white/clear matrix. Core drilling proved it to be 5% chalcocite in quartz-carbonate altered andesite. Companies that drill off prospects with RC or RAB rigs with no plans to follow up with diamond holes always have a hard time convincing me they know what they are doing....>> Jaba ..KNOWS what they are doing...been awhile Ujina - I truly hope all is well! It will be well at Jaba soon. Chuca exchange2000.com +J. Ujina (904 ) From: +Chris Saturday, Nov 1 1997 11:22PM ET Reply # of 937 Off Topic For J. Ujina (Your email address is not available in your profile, so I am posting to you on this thread.) You have stated that you are a great geologist, but a poor investor. Perhaps you can help me with a drill logging question that I was discussing on the Ashton (ACA) thread. I have surfed the net but can only find info on drill technology, not logging techniques. I have some familiarity with solid core logging, but only a little book learning about borehole logging by analyzing particles in the return well water/mud (often rotary percussion drills). Specifically, is there greater imprecision with the latter wrt depth of sample? Is it harder to determine that a sample chip came from a depth of 140' versus 160'? Could lighter materials be carried to the surface more quickly than heavier materials, and so distort their apparent place in the stratigraphy?? Or is logging boreholes from the return mud detritus a pretty evolved science that gives quite accurate samples and accurate depth for the samples?? How is the material extracted from return water? Is it continually sieved, and is this material then saved in a series of labelled bags or containers for future use?? Any enlightenment would be appreciated. If you don't know the response, do you have any field geologist friends who could help? Many thanks. NEXT To: +Chris (905 ) From: +J. Ujina Monday, Nov 3 1997 1:19PM ET Reply # of 937 Hi Chris! My e-mail doesn't receive, and the boffins who installed it haven't the slightest idea why. I am not gifted with a huge amount of patience for cyber-ethereal stuff, so until they can solve the problem without deleting everything and installing it anew, it can stay broken. As regards your questions - yes and no. In RAB drilling (rotary air blast), lighter particles may get to the surface faster than heavier particles, and you can see them pass out the top of the receiving cyclone into the air (as dust) while the heavier stuff falls out the bottom into a bag. If there is fine free gold in the hole, out it goes with the dust. However, the air pressure is very high, so everything comes out at once - the side benefit, and a very important one in reverse circulation (water) drilling is that the head doesn't clog up. Since everything is carried in suspension in an RC hole, nothing is lost, unless fine gold is carried in the water through the mesh size of the sieve. You would know whether this was likely by the type of deposit you are drilling off. Samples are accurate for depth and lithology. Companies choose RC or RAB drilling over core drilling because it is much cheaper and gives a look at stratigraphy at low cost. However, your 'sample' is a little square of very clean gravel you map through a handlens or binocular microscope. If you need more information you have to find the bag with the sample, frequently out of thousands (hopefully you have an assistant). The Ujina discovery, for example, was two sequential squares of very clean gravel with (even under high power) a lot of little black specks in a white/clear matrix. Core drilling proved it to be 5% chalcocite in quartz-carbonate altered andesite. Companies that drill off prospects with RC or RAB rigs with no plans to follow up with diamond holes always have a hard time convincing me they know what they are doing. Hope this helps. Ujina Next Subject: GOLDEN RULE (tse:GNU) To: J. Ujina From: Chris Nov 3 1997 3:22PM EST Reply #907 of 937 Thank you. Yes it does help. You said: "Samples are accurate for depth and lithology." I had been wondering whether Ashton's good results from a narrow horizon may perhaps have come from an even narrower, or wider horizon. However, your input suggests that is not likely. The results reported by Ashton for a given depth range, then, probably do belong to that depth range. Thanks again. Subject: GOLDEN RULE (tse:GNU) To: J. Ujina From: webpilot Nov 23 1997 8:53PM EST Reply #908 of 937 I haven't heard anything in a long time regarding Stenpad. Anyone heard anything? I see that recently they awarded Hixson employees some options. Seach Results : Subject: JABA INC.(c.jba) Reply #510, Date: Jul 8 1998 9:02PM Wednesday July 8, 8:13 pm Eastern Time Company Press Release JABA and Valerie Gold: Phase I of East Silver Bell Drilling Completed VANCOUVER, British Columbia--(BUSINESS WIRE)--July 8, 1998-- JABA (Alberta Stock Exchange:JBA. -................... (1722 more chars) Subject: Corriente Resources V.CTQ Junior Exploration Co. Reply #1059, Date: Jul 6 1998 4:50PM Additional Taca-Taca results Corriente Resources Inc CTQ Shares issued 20,977,832 ...... (5449 more chars) Subject: Peruvian Gold Ltd. PVO Reply #565, Date: Jun 12 1998 8:59AM H THIS LINK IS DEADttp://www.fin-info.com/press_release.phtml?symbol=PVO&_time=19980611172019 Peruvian Gold: Drilling Commences at the Tingo Porphyry Copper Prospect VANCOUVER, BRITISH COLUMBIA--Mr David Henstridge, President is pleased to report......... (3619 more chars) Search Notes Messages are sorted in order of date, most recent first. The last 120 days of messages are searchable. Discussion | People | MetaCrawler Subject Titles Only Full-Text Messages with Links