Sunday, October 20, 2019

RNX – Geology Due Diligence

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Viewing 15 posts - 16 through 30 (of 37 total)
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  • #3121
    lexcon
    Moderator

    That also means, between Belleisle fault, the intrepide fault, and the intersecting shears there is a lot of potential exploration targets in the southern portion of the B-H mine.

    We are just scratching the surface of what this mine has to offer IMO.

    #3123
    Barry4180
    Participant

    Actually the Bellesisle Fault runs way down south to St. Ives Gold Camp and beyond the camp. It’s an entirely separate fault from the Playa but it does “look” to be a 3rd order shear/fault off the Playa which is why for a long time I could not find the Belleisle Fault, which has been the economic resource for St. Ives mining operation.

    Western Flanks is the north extension of the Belleisle fault, and it runs at depth. From Joanna Hodges paper I believe it was encountered to 1300 metres on the BH property.

    #3126
    Barry4180
    Participant

    Nope, it wasn’t from Joanna Hodges. The information on the meter depth was from a earlier paper, maybe 1996?

    Found a really good paper today: Komatiite-hosted nickel sulfide deposits: Geology, geochemistry, and genesis

    https://www.researchgate.net/publication/286295030_Komatiite-hosted_nickel_sulfide_deposits_Geology_geochemistry_and_genesis

    Seems we may have missed some other economics on the BH property.

    #3135
    Barry4180
    Participant

    Okay, this is the research paper confirming depth of the Alpha Island Fault.

    “Targeting nickel sulfide deposits from 3D seismic reflection data at Kambalda, Australia”
    “Figure 13. Alpha Island fault plane inferred from drilling is marked with blue arrow (dark plane, partially shaded in white, outlined by a thin pink line). The evidences of the actual fault plane (thick red line) position can be seen in two different depth slices: (a) 768m and (b) 1266m. We reinterpret Alpha fault as consisting of the two planes with similar directions, but diverging toward the surface. In fact, it is possible to see that strong amplitudes are displaced in accordance with the dextral movement, as shown by the black dashed line in (b). Other faults also can be seen as indicated with brown arrows in (a).Yellow discs denote position of various intrusives, as intercepted by underground drill holes.

    #3136
    lexcon
    Moderator

    Barry, which paper is that from? Do you have a link?

    #3137
    Barry4180
    Participant

    “Targeting nickel sulfide deposits from 3D seismic reflection data at Kambalda, Australia”

    #3138
    Barry4180
    Participant

    Pt and Pd mobility in hydrothermal environments: evidence from komatiites and from thermodynamic modelling

    https://publications.csiro.au/rpr/download?pid=csiro:EP112384&dsid=DS2

    There is a focus on the Yilgarn Craton of Western Australia for this topic.

    #3141
    Barry4180
    Participant

    As per post #3117 tenement #M 15/1691 South end borders Westgolds tnenment. Note the number 6540000 by 376000 on the map.WGT

    #3142
    Barry4180
    Participant

    NEW Beta Hunt property

    RNC May prefer to Keep this as it borders on its own lease.

    #3143
    lexcon
    Moderator

    Barry,
    It lloks close but doesn’t share a border. The north end of the Westgold area is 6536000 and the south end of B-H is 6538000, so what ever the values mean (feet/meters/cubits??) there are 2000 of them between the two tenements.“>

    #3215
    All.inAgain
    Participant

    Lexcon, yes, we still have tons of fault exploration to do in the areas that intersect the pyritic sediment layer. Gold is usually found there!

    #3217
    Barry4180
    Participant

    Thanks for applying the boundaries to the map Lexcon. Thinking on this area in blue while studying the “ponds” nearby it is entirely possible that is area would be unable to be worked due to water underground. The nearby Belleisle mine operated by St. Ives had significant water flow issues with its underground operations on multiple occasions. Could be a tough sell.

    #3218
    Barry4180
    Participant

    shears faultsITEM BH

    After studying these it seems the Belleisle fault extends past the Kambalda dome on the eastern side in a northerly direction. Due to the pinching effect or compression on several shears and faults in this region it may be a high pressure zone of fluid density as it skirts north past the dome.

    #3219
    lexcon
    Moderator

    Hey Barry, check this out.

    I found a layout of the footprint of the B-H mine overlaid on an aerial view of the area. I was pretty close on my guesstimate of the footprint in relation to the new Westgold properties.

    B-H east line runs parallel and under the Lake Lefroy causeway, and terminates and turns south right near the mine in the middle of the salt bed (Intrepide?)
    “>

    #3228
    Barry4180
    Participant

    Nice overlay! Yes that is the Intrepide Mine, for reference from Mindat. Top right corner of M15/1518 is the Redoubtable Mine.

    https://www.mindat.org/loc-190307.html

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