KOOCANUSA CHIP SAMPLE LIBRARY

The images below are of representative chip samples from each station at Koocanusa (where samples could be collected). Hovering over the image will activate the magnifying function for a more detailed view. Information in the left column provides basic field data, but for full descriptions refer to the full field notes available in the Koocanusa data center.

CCU-051

Date Collected: 6th October 2020

Station ID: CCU-051

Easting: 624035

Northing: 5441439

Datum: NAD83 Zone 11

Description: Similar to CCU-050, but dissolution seams and ?vesicles / pore spaces are infilled with euhedral quartz-carb and a metallic, platy mineral which looks silver but can be green in very thin sheets. Mildy magnetic.

CCU-052

Date Collected: 6th October 2020

Station ID: CCU-052

Easting: 624082

Northing: 5440552

Datum: NAD83 Zone 11

Description: Buff siltstone with red oxide mm-wide speckles and occassional black hexagonal crystals. Minor hematite staining.

CCU-053

Date Collected: 6th October 2020

Station ID: CCU-053

Easting: 624335

Northing: 5440492

Datum: NAD83 Zone 11

Description: Silty mudstone, phyllitic texture with micaceous beds. Green mineral clots along mm-wide veinlets

CCU-054

Date Collected: 6th October 2020

Station ID: CCU-054

Easting: 624082

Northing: 5440552

Datum: NAD83 Zone 11

Description: Buff siltstone with red oxide mm-wide speckles and occassional black hexagonal crystals. Minor hematite staining.

CCU-055

Date Collected: 6th October 2020

Station ID: CCU-055

Easting: 624978

Northing: 5439851

Datum: NAD83 Zone 11

Description: Buff, fine-grained sandstone with mulitple mm-wide (barren) qtz-carb veinlets, some vuggy and open with well developed crytsal texture infills. Stromatolites present, maroon to greenish along sedimentation surfaces and rare 1cm qtz veins cutting through.

CCU-056

Date Collected: 6th October 2020

Station ID: CCU-056

Easting: 624969

Northing: 5439862

Datum: NAD83 Zone 11

Description: Massive silty dolomite, purple colour with interbedded matrix supported angular conglomerate up to 2cm wide. Some bands have green clot minerals but also show a green “oxide” on surface, unlike where observed elsewhere. Overlies unit described in CCU-055.

CCU-057

Date Collected: 6th October 2020

Station ID: CCU-057

Easting: 625100

Northing: 5439669

Datum: NAD83 Zone 11

Description: Mudstone outcrop, maroon layers with pink possible oncoids. All layers have pervasive green mineral and white interstitial clays. Outcrop has 3cm wide qtz veins.

CCU-058

Date Collected: 6th October 2020

Station ID: CCU-058

Easting: 625131

Northing: 5439527

Datum: NAD83 Zone 11

Description: Outcrop of basalt with contact of overlying siltstone. BASALT: mainly massive but with vesicular textures lower down. Speckled with bright orange oxide in cubic pits (?after pyrite?). Rock is generally altered to a green colour. Whole face is run through with veins up to 3cm wide that cross-cut, bifurcate and form stockworks. Veins have banded infill, often quartz rim with a darker brown or purple core. Larger veins are heavily oxidized, and some smaller veins host the green-platy mineral in their selveges. SILSTONE: Fine grained with dessication cracks. Cracks are infilled with sub-rounded basalt flake. Possible that this is actually a pyroclastic horizon with a silstone veneer. Bedding / Contact at 297/42, Quartz-Carb veins at 296/72, Veins with centerine at 280/64, Slickensides trend 118/32 and fault plane is 263/58.

CCU-059

Date Collected: 6th October 2020

Station ID: CCU-059

Easting: 625127

Northing: 5439506

Datum: NAD83 Zone 11

Description: Basalt with vesicles infilled by chalcedonic quartz, green ?epidote or partially filled with a hematite rim. One 2cm barren qtz vein noted. Base of section appears to be pillows, so sequence with CCU-058 goes pillow basalts with brecciated material and mudstone at top, basalt flows (subaerial) with stockwork and oxides, pyroclastic flow with lithic fragments, siltsone with dessication cracks and then back to shallow marine bedded silts.

CCU-061-A

Date Collected: 6th October 2020

Station ID: CCU-061-A

Easting: 623532

Northing: 5441003

Datum: NAD83 Zone 11

Description: Large outcrop dominated by buff coloured stromatolites overlying medium-grained sandstone. Stromatolites are dolomitic with green/red on sedimentation surfaces. Some break open to reveal large but indisctinct veins with calcite / barite bladed crystals and a rusty brown oxide. These units are unerlain by the sandstone unit which hosts vuggy veins. It is hard and silicified with speckled mm-wide oxide blebs. Veins are rodded, oxidised with the mystery cubic black mineral associated with sandstones here.

CCU-062

Date Collected: 7th October 2020

Station ID: CCU-062

Easting: 621351

Northing: 5443118

Datum: NAD83 Zone 11

Description: Interbedded siltstone and mudstone (siltstone dominant). Ripple marks and salt crystal impressions.

CCU-063

Date Collected: 7th October 2020

Station ID: CCU-063

Easting: 621301

Northing: 5443162

Datum: NAD83 Zone 11

Description: Buff outcrop of banded fine grained sandstone, weakly metamorphosed to a quartzite and silicified. Sandstones pass upwards into a cross-bedded unit, then a pyroclastic with lithic fragments, thin mud with dessication cracks topped by stromatolites.

CCU-064

Date Collected: 7th October 2020

Station ID: CCU-064

Easting: 619265

Northing: 5444976

Datum: NAD83 Zone 11

Description: Rippled siltstone with oxide blebs. Second outcrop at same location has bedding 312/52.

CCU-065

Date Collected: 7th October 2020

Station ID: CCU-065

Easting: 619170

Northing: 5444968

Datum: NAD83 Zone 11

Description: Fine grained siltstone with cross bedding and ripple marks overlain by mudstone / muddy siltstone with dessication cracks.

CCU-066-A

Date Collected: 7th October 2020

Station ID: CCU-066-A

Easting: 619110

Northing: 5445112

Datum: NAD83 Zone 11

Description: End of road turnaround. Bedrock / subcrop exposed in floor. Dominant host is bedded siltstone but silicified. Center of clearing are pink bariet veins / stockwork outcrop. Green mineral is ubiquitous green mineral, usually as clots or as veinlets. This sample is the siltstone country rock.

CCU-066-B

Date Collected: 7th October 2020

Station ID: CCU-066-B

Easting: 619110

Northing: 5445112

Datum: NAD83 Zone 11

Description: End of road turnaround. Bedrock / subcrop exposed in floor. Dominant host is bedded siltstone but silicified. Center of clearing are pink bariet veins / stockwork outcrop. Green mineral is ubiquitous green mineral, usually as clots or as veinlets. This sample is the siltstone country rock.

CCU-067

Date Collected: 7th October 2020

Station ID: CCU-067

Easting: 619441

Northing: 5445261

Datum: NAD83 Zone 11

Description: End of newly pushed road. Subcrop influenced by tree roots to look clay altered, and hard to get decent measurements. Appears to be a banded siltstone grey, but with bands of green and maroon. Tabular red crystal found in float at base of cut, ?calcite? This crystal has been cut through and is therefore before the formation of sub-mm veinlets. Fracture surface covered in red oxide speckles.

CCU-068

Date Collected: 7th October 2020

Station ID: CCU-068

Easting: 619489

Northing: 5445254

Datum: NAD83 Zone 11

Description: Continuation of outcrop from CCU-067, but more obvious bedding.

CCU-076

Date Collected: 7th October 2020

Station ID: CCU-076

Easting: 622247

Northing: 5442632

Datum: NAD83 Zone 11

Description: Large new roadcut. Orange to buff coloured sandstone interbedded with ripples siltstone. Sands have open pore space with extensive garnet formation. Garnets appear red and opaque when whole, but when broken are green. Some layers in sandstone have a greenish hue.

CCU-077

Date Collected: 7th October 2020

Station ID: CCU-077

Easting: 622178

Northing: 5442709

Datum: NAD83 Zone 11

Description: Grey to buff siltstone and chert, silicified unit with dessication cracks. Two bedding planes noted at either end of outcrop, appears to be a vey open fold with an axial plane of 192. Rusty veinlets with rare sub-mm pyrite.

CCU-082-A

Date Collected: 7th October 2020

Station ID: CCU-082-A

Easting: 620559

Northing: 5443807

Datum: NAD83 Zone 11

Description: Fine grained dolomite (or possibly sandstone), silicified,with rare fine pyrite. Section also has vein stockwork with green chloritised rims and oxide rods.

CCU-082-B

Date Collected: 7th October 2020

Station ID: CCU-082-B

Easting: 620560

Northing: 5443808

Datum: NAD83 Zone 11

Description: Fine grained dolomite (or possibly sandstone), silicified,with rare fine pyrite. Section also has vein stockwork with green chloritised rims and oxide rods.

CCU-083

Date Collected: 7th October 2020

Station ID: CCU-083

Easting: 619079

Northing: 5449893

Datum: NAD83 Zone 11

Description: Fine grained sandstone, grey, silicified with rare interbedded mudstones. 1cm wide rusty quartz-carb vein with micor chlorite.

CCU-084

Date Collected: 8th October 2020

Station ID: CCU-084

Easting: 617158

Northing: 5444241

Datum: NAD83 Zone 11

Description: Fine grained sandstone, grey, with bands of silt.

CCU-085

Date Collected: 8th October 2020

Station ID: CCU-085

Easting: 617123

Northing: 5443941

Datum: NAD83 Zone 11

Description: Massive crystalline basalt with rare vesicular bands. Shot through with rusty qtz stockwork with green / black minerals in selvege. Also has oxidized cubes up to 5mm throughout.

CCU-086

Date Collected: 8th October 2020

Station ID: CCU-086

Easting: 617063

Northing: 5443714

Datum: NAD83 Zone 11

Description: Massive grey crystalline sandstone, looks like basalt except for thin stratiform layers of mud. Stockwokr of 1-3mm wide qtz-barite veins with broad oxidized selveges. Deep red lathes of oxide / hemtatite within the vein, forming “clots”. Occasional “silvery” mineral but hard to determine in field.

CCU-087

Date Collected: 8th October 2020

Station ID: CCU-087

Easting: 616992

Northing: 5443514

Datum: NAD83 Zone 11

Description: Amygdaloidal basalt, vesicles infilled with qtz-carb or oxide rims. Possible pillow formations.

CCU-088

Date Collected: 8th October 2020

Station ID: CCU-088

Easting: 616146

Northing: 5442921

Datum: NAD83 Zone 11

Description: Finely laminated silts and muds. Silts have 2-3cm cross bedded layers and possible ripples.

CCU-089

Date Collected: 8th October 2020

Station ID: CCU-089

Easting: 615916

Northing: 5442407

Datum: NAD83 Zone 11

Description: Siltstone, bedded, grey, more massive layers than in CCU-088. Occassional garnets in coarser layers. Fe-Mn fracture fill.

CCU-090

Date Collected: 8th October 2020

Station ID: CCU-090

Easting: 615360

Northing: 5442292

Datum: NAD83 Zone 11

Description: Complex outcrop of layered sediments. Generally a fine siltstone with bands of mudstone, then coarser mature sands, especially above ripples. Hematite stained layers. Also has purple colours in the muds and the siltstone.

CCU-091

Date Collected: 8th October 2020

Station ID: CCU-091

Easting: 615160

Northing: 5442111

Datum: NAD83 Zone 11

Description: Section of siltstone, bedded with muds and very fine sands. Fe/Mn rich, garnets and pyrolusite on fractures. Ripples, dessication cracks and rip up clasts. More massive siltstone laters have pods of 5mm orange oxide, pervasive. Narrow, earthy, vuggy quartz veins, <5mm thick common.

CCU-092

Date Collected: 8th October 2020

Station ID: CCU-092

Easting: 615137

Northing: 5442121

Datum: NAD83 Zone 11

Description: Quartz float from above roadcut over a large area. Earthy rotten rods, remnant magnetite

CCU-093

Date Collected: 8th October 2020

Station ID: CCU-093

Easting: 615140

Northing: 5442125

Datum: NAD83 Zone 11

Description: Float, coarse sandstone with extensive hematite staining. Some finer, paler layers resist the red! Occassional earthy green bleb mineral.

CCU-094

Date Collected: 8th October 2020

Station ID: CCU-094

Easting: 615097

Northing: 5442085

Datum: NAD83 Zone 11

Description: Section of siltstone, bedded with muds and very fine sands. Fe/Mn rich, garnets and pyrolusite on fractures. Ripples, dessication cracks and rip up clasts. More massive siltstone laters have pods of 5mm orange oxide, pervasive. Narrow, earthy, vuggy quartz veins, <5mm thick common.

CCU-096

Date Collected: 8th October 2020

Station ID: CCU-096

Easting: 615407

Northing: 5440096

Datum: NAD83 Zone 11

Description: Outcrop of semi-massive fine sandstone, buff colour with oxidation rings. 1cm wide quartz vein. Host rock has garnets.

CCU-097

Date Collected: 8th October 2020

Station ID: CCU-097

Easting: 617872

Northing: 5442319

Datum: NAD83 Zone 11

Description: Layered silts, some layers are calcareous. Minor ripples. Minor pyrolusite on fractures. Pale buff – grey colour.

CCU-098

Date Collected: 8th October 2020

Station ID: CCU-098

Easting: 617979

Northing: 5442089

Datum: NAD83 Zone 11

Description: Large? barite vein in float, set in siltstone. Oxidized rims and magnetite.

CCU-100

Date Collected: 8th October 2020

Station ID: CCU-100

Easting: 618305

Northing: 5441699

Datum: NAD83 Zone 11

Description: Grey outcrop, mix of massive siltstone to mm-banded mudstone. Ripple marks in abundance. Run through with qtz-veins up to 2cm, with narrow 2mm veins sub=parallel, very straight. Veins are rodded with green selvege and rotted oxide core.

CCU-102-A

Date Collected: 8th October 2020

Station ID: CCU-102-A

Easting: 618720

Northing: 5441634

Datum: NAD83 Zone 11

Description: Medium grained siltstone with ripples. Dark grey to purple in colour. Cross cutting qtz-carb veins as localized stockwork. Veins primarily follow bedding … evaporites?

CCU-102-B

Date Collected: 8th October 2020

Station ID: CCU-102-B

Easting: 618720

Northing: 5441634

Datum: NAD83 Zone 11

Description: Medium grained siltstone with ripples. Dark grey to purple in colour. Cross cutting qtz-carb veins as localized stockwork. Veins primarily follow bedding … evaporites?