CHLORITIC ARENITE It's more or less a parent name
that's assigned to many aluma silicate quartz feldspar - minerals.
Table 17.1. Major Element Composition of the Arenites
| Sample Number | SiO2 (wt%) | Al2O3 (wt%) | Fe2O3 (wt%) | MnO (wt%) | MgO (wt%) | CaO (wt%) | Na2O
(wt%) | K2O (wt%) | TiO2 (wt%) | P2O5 (wt%) | LOI (wt%) | Total (wt%) |
| KNJ-48A | 92.76 | 4.21 | 0.37 | 0.01 | 0.10 | 0.01 | 0.02 | 1.31 | 0.06 | 0.02 | 0.65 | 99.52 |
| KNJ-48J | 94.00 | 3.62 | 0.24 | 0.01 | 0.10 | 0.01 | 0.02 | 1.15 | 0.11 | 0.02 | 0.10 | 99.38 |
| KNJ-49A | 90.32 | 5.68 | 0.39 | 0.01 | 0.11 | 0.01 | 0.03 | 1.65 | 0.14 | 0.02 | 1.32 | 99.68 |
| KNJ-49B | 90.30 | 5.67 | 0.46 | 0.01 | 0.11 | 0.01 | 0.02 | 1.65 | 0.12 | 0.02 | 0.87 | 99.24 |
| KNJ-46C | 97.23 | 1 | 0.07 | 0.02 | <0.01 | 0.02 | 0.03 | 0.14 | 0.02 | 0.01 | 1.21 | 99.75 |
| KNJ-45J | 96.79 | 0.96 | 0.04 | 0.02 | <0.01 | 0.01 | 0.02 | 0.17 | 0.02 | 0.01 | 1.98 | 100.02 |
https://www.sciencedirect.com/topics/earth-and-planetary-sciences/arenite What's missing on the above list ?
Nickel.
Are there reknown nickel deposits that contain - Chloritic Arenite - with nickel ?
Thompson Nickel Belt.
Thompson Nickel Belt and the ... CL - chlorite ... arenite.
This unit contains abundant potassium feldspar (31–34%) ----------------------------------------------------------------------------------------------------------------------------
I'm hoping - ETC - shares thier findings when processing Scadding's tailings.
With a few reports i've read... there is significant alumna silicates.
And... the big wonderment of, was nickel over looked in tetra bonds.
Bonds that tie a nickel to a magnesium or aluminum... etc.
Could prove invaluable -
upon, BMK mining Scadding ores still in the ground.
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3 DEEP HOLES WERE DRILLED - Ever wonder what's below the 200m depths around Lake Wanapetei ?
Scaddign Mine is approx 30km north east from Sudbury...
In this report 3 deep holes were drilled - 50km north east of Sudbury.
Same vicinity as, SPJ claims.
Second deep diamond-drill hole. The position of the second drill hole is located on the western shore of Parsons Lake in southeastern DeMorest Township (Figure 2).
The Serpent, Bruce, and Mississagi Formations were encountered in the hole. A diabase dike intrudes the Serpent Formation sandstones at a depth of approximately 380 m. A thick Nipissing gabbro body lies at the contact of the Serpent Formation with the Bruce Formation. The Espanola Formation is absent.
The Serpent Formation consists of a medium-grained subarkose, locally of quartz arenite and arkosic wacke. The upper units are weakly bedded and contain little disseminated pyrite. Below a depth of 550 m, the rocks are well bedded and locally exhibit silty interbeds. Calcareous arenite occurs in places below 762 m.
The
Nipissing gabbro is approximately 400 m thick. It is very homogeneous, exhibits only minor variations in grain size, and contains widely spaced narrow quartz-carbonate veins. These veins host minor pyrrhotite-chalcopyrite mineralization.
Below the Nipissing gabbro, weakly foliated, matrix-supported paraconglomerate and pebbly wacke of the Bruce Formation occurs. Locally, the wacke is pyritiferous and contains approximately 10 to 20 percent clasts. Below a depth of 1346 m, it becomes cleaner and contains less pebbles. The base of the Bruce Formation is marked by a 6 m thick unit of well-bedded wacke and siliceous siltstone.
The Mississagi Formation is a medium-grained, grey subarkose to arkosic wacke. Siltstone beds occur at widely spaced intervals and
quartz arenite occurs locally in the lower half of the formation. Disseminated sulphides commonly make up less than 1 percent. Narrow sections, however, may contain up to 5 percent. Conglomerates appear to be absent. The basement rocks are overlain by a "silicified zone with abundant white quartz and quartzite" that is 67 m thick. It includes calcareous quartzite beds up to 0.6 m thick that contain small quartz pebbles. The basement rocks were classified by D. Phipps (1980) as "well foliated chloritic arenite with abundant carbonate laminations and scattered quartzite clasts". These rocks include "thin zones of intermediate flow rock or crystal tuff'.
https://www.geologyontario.mndm.gov.on.ca/mndmfiles/pub/data/imaging/R242//R242.pdf -----------------------------------------------------------------------------------------------------------------------------
So why even mention - Arenites ?
Becuase... nickel could be running with the aluma silicates
( aluminum, mangeium, manganese, feldspars. potassiums, )
Pyrites and it's cousins ( ites ) are not only prone to irons....
The Thompson Nickel Belt at top end of Lake Superior - redefines what sort of ore nickel
can run in. Arenites - are a great example.
I remeber few years back... i came across an open cut quartz vein - aside of the quartz vein in direct contact - was aluma silicates in what appeared as magnesium with - Massive pyrite, most likely pyrrhotites, and micas heavy, thick, scaley, poor consolodation - easily crumbled - Heavy as hell... A 1 foot x 1 foot peice weighed approx 30 -40 lbs.
Never really entertained it...
But, knowing what i know now...
how nickel can run in this style of ore matrix.. i should revisit the area...
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Cheers.....