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THE INDUSTRIAL MINERAL DATABASE
Occurence 4620 - 301 Austdøla
(Object Id: 7966)
(Last updated: 27.09.2006)

Location
County: Vestland Municipality: Ulvik (4620)
Map 1:50000: Myrdal (1416-3) Map 1:250000: Odda
Coordinate system: EU89-UTM Zone 32 (Coordinates NOT confirmed)
East: 396317 m. North: 6716292 m.
Longitude: 7.1083890 Latitude: 60.5691730
Show on map

Resource
Resource Type: Silica Resource Subtype: Quartzite

Importance
Raw material meaning: Little Importance (reg. 18.02.2015)

Resources and production
Activity: Exploration Reserves:
Operating method: Historical production:


Mineralization
Genesis: Form:
Main texture: Min. distribution:
Main grain size:
Strike/Dip: Direction:
Plunge:
Stratigraphic classification of host rock
Era: Period:
Province:
Geotec.unit:
Tectonic complex:
Igneous complex:
Group: Formation:

Information(s) in free text format
Free text
The quartzite complex of Austdøla comprises a heterogeneous lithology dominated by quartzitic rocks (>92 vol.% SiO2). It extends about 5 km in N-S direction and 800 m in E-W direction and forms, togehter with the Trælhaug quartzite complex (Eidfjord), an exotic unit within autochthonous Lower to Upper Proterozoic magmatic gneisses west of the Mandal-Ustaos Fault. The rocks underwent a medium- to high-grade metamorphism resulting in medium-grained quartzite with bluish colour. In 2005 the quartzite complex was sampled and analysed by NGU along a E-W traverse exposed at the Osafjell bom vei at an altitude of 800 to 900 m a.s.l.. A ca. 130 m wide and relative pure (>95 vol.% SiO2) quartzite band occurs at the W margin of the complex. Irregular batches and veinlets of medium-grained feldspar (5 mm) are common within the quartzites. Accessory minerals are magnetite, biotite, chlorite and pyroxene. The quartz contains sub-microscopic needles of rutile (<0.005 mm). Occasionally, the quartzite is crosscut by mafic dykes and irregular pegmatite dykes (<0.5 m in thickness). The average grain size of the bluish quartz in the quartzite is 3 mm. The pure quartzite becomes darker and banded after 150 m towards E. The dark quartzite contains also irregular batches of feldspar and is relative rich in muscovite (ca. 5 vol.%). The dark variety is about 50 m in thickness. The central part od the complex consists of feldspar-bearing banded quartzite (about 150 m wide) hosting folded ultramafites, pegmatitic schlieren of feldspar and boudins of amphibolite, fine-grained monzonite and granodiorite (0.5 to 50 m in size). The layering of the quartzite is caused by variations of the biotite, chlorite and feldspar content. The quartzite becomes more homogeneous towards E where it forms a ca. 150 m wide variety. However, the quartzite here contains pegmatitic feldspar schlieren which form about 10 to 20 vol.% of the rock. The following 150 m wide band at the E contact of the quartzite complex represents a melange of banded and folded quartzites, mafites, (grano-)diorites and migmatites. LA-ICP-MS analyses of quartzites from Austdøla reveal, that they contain quartz of low chemical raw material quality caused by the high Ti content of about 50 ppm. Due to the heterogeneous lithology, mineralogy of the quartzites and the low chemical raw material of quartz the deposit at Austdøla cannot be considered as a potential quartz deposit.

Photo(s) from the Deposit area:
Photo no. 1 showing View over the Austdøla quartzite complex"
Photo no. 2 showing Geology along E-W traverse"
Photo no. 3 showing thin section image"

Fieldsamples
Sample No. Sample type Miscellanrous
2608504 Bedrock
Sampler: Muller/...Stored: NGU
Comment: quartzite at 32V0395565 6717443
No. of registrated element analyses = 1
No. of registrated mineral analyses = 2
No. of registrated oxide analyses = 1
2608505 Bedrock
Sampler: Muller/...Stored: NGU
Comment: quartzite at 32V0395611 6717424
No. of registrated element analyses = 1
No. of registrated mineral analyses = 2
No. of registrated oxide analyses = 1
2608506 Bedrock
Sampler: Muller/...Stored: NGU
Comment: quartzite at 32V0395649 6717430
No. of registrated element analyses = 1
No. of registrated mineral analyses = 2
No. of registrated oxide analyses = 1
2608507 Bedrock
Sampler: Muller/...Stored: NGU
Comment: quartzite at 32V03957246717428
No. of registrated element analyses = 1
No. of registrated mineral analyses = 2
No. of registrated oxide analyses = 1
2608508 Bedrock
Sampler: Muller/...Stored: NGU
Comment: fine-grained monzonite at 32V0395742 6717436
2608509 Bedrock
Sampler: Muller/...Stored: NGU
Comment: quartzite at 32V0395762 6717448
No. of registrated element analyses = 1
No. of registrated mineral analyses = 2
No. of registrated oxide analyses = 1
2608510 Bedrock
Sampler: Muller/...Stored: NGU
Comment: quartzite at 32V0395852 6717431
No. of registrated element analyses = 3
No. of registrated mineral analyses = 2
No. of registrated oxide analyses = 1
2608511 Bedrock
Sampler: Muller/...Stored: NGU
Comment: quartzite at 32V0395939 6717446
No. of registrated element analyses = 3
No. of registrated mineral analyses = 2
No. of registrated oxide analyses = 1
2608512 Bedrock
Sampler: Muller/...Stored: NGU
Comment: quartzite at 32V0396021 6717405
No. of registrated element analyses = 1
No. of registrated oxide analyses = 1
NB! All analyse values are shown at the end of the printout.:


Analyse Results
from
Deposit Area 4620 - 301 Austdøla

Element analyses

( *=parts pr. million, #=parts pr.billion, Negative values means below detection limit value.)
Sample No. Sample Type Cu* Zn* Pb* Co* Ni* As* Ba*
2608504 Bedrock -10 14 -10 8 -5 -5 62
2608505 Bedrock -10 11 -10 7 -5 -5 44
2608506 Bedrock -10 13 -10 7 -5 -5 522
2608507 Bedrock -10 13 -10 7 -5 -5 123
2608509 Bedrock -10 11 -10 7 -5 -5 112
2608510 Bedrock -10 22 -10 5 -5 -5 213
2608510 Bedrock
2608510 Bedrock
2608511 Bedrock
2608511 Bedrock -10 16 11 7 -5 -5 231
2608511 Bedrock
2608512 Bedrock -10 10 -10 6 -5 -5 295
------------------
Sample No. Mo* Sn* Sb* Ga* Ge* V* Cr* Fe% Th*
2608504 -5.00 -10 -10 -10.00 -10 -10 10.00
2608505 -5.00 -10 -10 -10.00 10 20 9.00
2608506 -5.00 -10 -10 -10.00 -10 -10 6.00
2608507 -5.00 -10 -10 -10.00 -10 13 10.00
2608509 -5.00 -10 -10 -10.00 12 13 13.00
2608510 -5.00 -10 -10 -10.00 -10 -10 16.00
2608510 0.80 5.00
2608510 0.70 12.50
2608511 0.80 1.30
2608511 -5.00 -10 -10 -10.00 21 28 10.00
2608511 0.80 1.40
2608512 -5.00 -10 -10 -10.00 -10 15 10.00
------------------
Sample No. U* W* Rb* Sr* Y* Zr* Nb* Ta* Cs*
2608504 -10.00 26 14.0 21.0 -5.0 89 -5.00 -10.00 -10.00
2608505 -10.00 23 14.0 -5.0 -5.0 73 -5.00 -10.00 -10.00
2608506 -10.00 17 52.0 47.0 -5.0 57 -5.00 -10.00 -10.00
2608507 -10.00 23 27.0 31.0 -5.0 181 6.00 -10.00 10.00
2608509 -10.00 23 17.0 13.0 -5.0 259 5.00 -10.00 -10.00
2608510 -10.00 25 33.0 51.0 6.0 126 6.00 -10.00 -10.00
2608510
2608510
2608511
2608511 -10.00 18 43.0 51.0 -5.0 186 5.00 -10.00 -10.00
2608511
2608512 -10.00 22 46.0 49.0 -5.0 79 -5.00 -10.00 12.00
------------------
Sample No. La* Ce* Pr* Nd* Yb* B* Li* Be* Na*
2608504 -10.00 -10.00 -10.00 -10.00 -15.00
2608505 -10.00 -10.00 -10.00 -10.00 -15.00
2608506 -10.00 11.00 -10.00 -10.00 -15.00
2608507 -10.00 17.00 -10.00 -10.00 -15.00
2608509 -10.00 15.00 -10.00 -10.00 -15.00
2608510 -10.00 17.00 -10.00 -10.00 -15.00
2608510 1 -1 -0 -22
2608510 1 1 -0 -22
2608511 1 1 -0 -22
2608511 -10.00 -10.00 -10.00 -10.00 -15.00
2608511 1 1 -0 -22
2608512 -10.00 -10.00 -10.00 -10.00 -15.00
------------------
Sample No. Al* P* K * Sc* Ti* Hf*
2608504 -10.00 -10.00
2608505 -10.00 -10.00
2608506 -10.00 -10.00
2608507 -10.00 -10.00
2608509 -10.00 10.00
2608510 -10.00 -10.00
2608510 44 -6 17 51
2608510 75 -6 34 55
2608511 5 6 -1 39
2608511 -10.00 -10.00
2608511 5 -6 -1 39
2608512 -10.00 -10.00

Mineral analyses

( All values are in ppm. Negative values means below detection limit value.)
Sample No. Sample Type Mineral Li Be B
2608504 Bedrock Quartz .900 -.100 1.100
2608504 Bedrock Quartz 1.000 -.100 .700
2608505 Bedrock Quartz 1.200 -.100 .900
2608505 Bedrock Quartz .900 -.100 .700
2608506 Bedrock Quartz .600 -.100 1.000
2608506 Bedrock Quartz 1.000 -.100 .700
2608507 Bedrock Quartz .800 -.100 1.900
2608507 Bedrock Quartz 1.100 -.100 .800
2608509 Bedrock Quartz .800 -.100 1.100
2608509 Bedrock Quartz .900 -.100 .700
2608510 Bedrock Quartz .800 -.100 .900
2608510 Bedrock Quartz -.500 -.100 .700
2608511 Bedrock Quartz .700 -.100 1.000
2608511 Bedrock Quartz .900 -.100 .800
------------------
Sample No. Na Al P K Ti Fe Ge
2608504 -22.000 47.200 7.200 4.500 63.800 2.400 .800
2608504 -22.000 55.600 -6.000 7.000 56.900 2.100 .800
2608505 -22.000 38.700 7.600 19.400 51.400 6.000 .700
2608505 -22.000 41.500 6.800 19.100 69.400 6.000 .700
2608506 -22.000 32.100 -6.000 8.400 42.900 3.500 .600
2608506 -22.000 20.700 -6.000 9.000 47.300 6.900 .700
2608507 -22.000 16.500 -6.000 13.000 44.300 8.500 1.200
2608507 -22.000 4.900 -6.000 3.600 33.200 4.400 .700
2608509 -22.000 41.300 6.200 9.800 48.000 7.800 .800
2608509 -22.000 51.900 -6.000 28.900 48.600 14.000 .700
2608510 -22.000 75.100 -6.000 34.100 55.000 12.500 .700
2608510 -22.000 43.500 -6.000 17.400 50.700 5.000 .800
2608511 -22.000 5.000 6.300 -1.400 38.600 1.300 .800
2608511 -22.000 5.200 -6.000 -1.400 39.400 1.400 .800

Oxide analyses

( All values are in % )
Sample No. Sample Type SiO2 Al2O3 TiO2 Fe2O3 MnO MgO CaO
2608504 Bedrock 96.24 1.74 0.04 0.33 -0.01 0.01 0.18
2608505 Bedrock 97.91 0.76 0.08 0.90 -0.01 -0.01 0.01
2608506 Bedrock 93.56 3.67 0.09 0.42 -0.01 0.09 0.05
2608507 Bedrock 94.56 2.59 0.10 0.63 -0.01 0.05 0.17
2608509 Bedrock 97.29 0.86 0.14 0.85 -0.01 -0.01 0.05
2608510 Bedrock 91.97 4.15 0.07 0.41 0.02 0.18 0.37
2608511 Bedrock 92.18 3.35 0.11 1.47 -0.01 0.04 0.18
2608512 Bedrock 93.94 2.75 0.09 0.64 -0.01 0.01 0.24
------------------
Sample No. Na2O K2O P2O5 Loss Sum
2608504 0.47 0.27 -0.01 0.27 100.00
2608505 0.00 0.23 -0.01 0.14 100.00
2608506 0.29 1.55 -0.01 0.35 100.00
2608507 0.69 0.53 -0.01 0.32 100.00
2608509 0.00 0.47 -0.01 0.11 100.00
2608510 1.06 0.80 -0.01 0.69 100.00
2608511 0.73 1.12 -0.01 0.28 99.00
2608512 0.42 1.31 -0.01 0.36 100.00


The fact sheet was created on 21.01.2022

Questions or comments regarding the fact sheet can be emailed to:
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