core interval

core interval

[′kȯr ¦in·tər·vəl]
(geology)
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References in periodicals archive ?
All intersections are downhole; core interval measurements and true thickness are yet to be determined.
42 grams of gold per tonne over 43 metres, with a core interval of 17.
Intersection is down-hole, core interval measurements and true thickness are yet to be determined.
The true width of the mineralization reported above is estimated to be 72% of the core interval and is subject to revision.
True widths of the reported intercepts above vary depending on the angle of the individual drill holes and are estimated to be between 75% and 100% of the core interval as reported.
39 (i) Denotes gold belts: BR- Boston Richardson Belt; NB1 - Gold belt 1 (up to 13 belts historically identified, including A) (ii) VG denotes visible gold observed in core interval and assaying completed by metallic screen methods on each half of the split core sample interval
The mineralised drill core interval is in a silicified breccia of grey heterolithic fragments in white argillic kaolinite matrix, containing quartz-amethyst crystal fragments, remnant alunite in vugs, terminated quartz crystal filled vugs, fine disseminated pyrite, locally cubic, limonite in fractures and as a pervasive stain.
64 - NB5,6 (i) VG denotes visible gold observed in core interval (ii) Denotes gold belts: BR- Boston Richardson Belt; NB1 - Gold belt 1 (up to Belt 7 historically identified, including A); GWKE2 - denotes Greywacke belt 2 (up to 3 identified to now)
18 - VG - (i) VG denotes visible gold observed in core interval - (ii) Denotes gold belts: BR- Boston Richardson Belt; NB1 - Gold belt 1 (up to Belt 7 historically identified, including A); GWKE2 - denotes Greywacke belt 2 (up to 3 identified to now) Initial fire-assay results have been received for 13 of the 23 drill holes from 4 sections spaced at 25 metre intervals (8675E, 8700E, 8725E and 87505E) covering a strike length of 100 meters.
47 - NB3 (VG) (i) VG denotes visible gold observed in core interval (i)(i) Denotes slate belts, BR- Boston Richardson Belt; NB1 - New Belt 1 (up to New Belt 7 identified, including A) Several additional observations can be made from this second batch of fire-assay results: - Full fire-assay results now received for 9 of the 23 drill holes from 3 sections (8675E, 8700E and 8725E) covering a strike length of 75 meters (Figure 1), - Fire-assay results from the first 9 drill holes show extreme grade variability even in the presence of visible gold (Figures 2 and 4), and even with larger core samples, as historically observed at Goldboro (ie.