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?
