Annual report for period ending 03-09-1992 Newcastle Range-Delamere area ELs 5441, 5443, 5444

Abstract

Efforts centred on follow up of two possible kimberlitic chromites, sample #BD4307, EL5441. In the initial follow up 14 stream sediment samples were collected in the vicinity of this sample, 8 of these samples returned 202 chromites. The second phase of follow up saw 38 samples collected (a number were loam scrapes), 26 returned positive results for chromite (returning 703 chromites and 1 diamond 0.003Cts). A third phase of follow up consisted of 72 infill samples over all of EL5441, with detailed loam sampling and a ground magnetic programme in the vicinity of BD4373 (8 infill samples 23 chromites and 1 diamond (0.003Cts)) 309 samples were collected from the loam grids. Numerous samples returned abundant chromite, and 4 samples containing a total of 21 diamonds (broken fragments to 0.005cts). The final phase of follow up, was in areas some distance from known anomalies (No results available). In the area of EL's 5443 and EL5444 a total of 90 samples were collected in the initial phase, returning 1 possible kimberlitic chromite. Follow up of this grain comprised 29 samples, returning a single basaltic chromite. The results from EL5441 are significant suggesting multiple sources. Comprehensive follow up required.