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File Created: 12-Jul-2016 by Jessica Norris (JRN)
Last Edit:  12-Jul-2016 by Jessica Norris (JRN)

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NMI
Name LBDL Mining Division Nelson
BCGS Map 082F011
Status Showing NTS Map 082F04W
Latitude 049º 11' 15'' UTM 11 (NAD 83)
Longitude 117º 50' 19'' Northing 5448638
Easting 438893
Commodities Dimension Stone, Building Stone Deposit Types R03 : Dimension stone - granite
Tectonic Belt Omineca Terrane Kootenay
Capsule Geology

The LBDL occurrence is located 12 kilometres north of Rossland, British Columbia, approximately 5 kilometres east of Highway 3B, covering the China, Murphy, and Hanna Creeks.

The LBDL occurrence is characterized by a dike-like gabbro that intrudes granodiorite of the Middle Jurassic Nelson Intrusions (Nelson Plutonic Suite), within sedimentary rocks of the Permian Mount Roberts Formation. The granodiorite host (Nelson Intrusions) consists of equigranular, hypidiomorphic biotite, hornblende, plagioclase, and quartz, all exhibiting a salt and pepper texture.

The dike consists of at least two phases; a broader phase of unknown width consisting of black, fine to medium crystalline, hornblende-pyroxene plus/minus biotite porphyry, and an interior phase termed LBDR, a glomeroporphyritic phase containing loose amalgamations of biotite crystals highlighted by labradorite crystals in a dark grey matrix. The LBDR phase has been mapped as a subvertical unit, trending roughly northwest-southeast, and forms a rectilinear pattern with respect to topography. The LBDR phase is consistently 60 metres wide with a minimum, continuous strike length of 900 metres (Assessment Report 35604).

The LBDL property was staked in 2014 by RIT Minerals Corporation and Salt Spring Imaging Ltd., who undertook a geological field reconnaissance study to characterize the nature of the LBDR phase and compile a general assessment of the property for potential for dimension stone, rock cladding, and polished decorative slabs. Work concluded that the LBDR phase is very resistant to weathering with minimal evidence of mineralogical breakdown on weathered surfaces. The unit combines colour, texture, and pattern appropriate for dimension and decorative stone. Further, the LBDR phase has the internal structural coherence necessary for trimming and cutting to specific sizes and shapes (Assessment Report 35604).

Bibliography
EMPR ASS RPT *35604

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