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THE ORE DATABASE
Occurence 5031 - 006 Sandsve
(Object Id: 4475)
(Last updated: 11.01.2022)
Location
County: Trøndelag Municipality: Malvik (5031)
Map 1:50000: Stjørdal (1621-1) Map 1:250000: Trondheim
Coordinate system: EU89-UTM Zone 32
East: 593565 m. North: 7021374 m.
Longitude: 10.8671470 Latitude: 63.3089540
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Resource
Resource Type: Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) Resource Subtype: Sulphides
Element(s): Kis
Importance
Raw material meaning: Not Assessed (reg. 18.02.2015)

Resources and production
Activity: Test mining Reserves:
Operating method: Historical production:


Operations
From - To Activity Comments
1990 - 1990 Sampling Company/Institution :H. Karlstrøm

Mineralization
Era: Paleozoic Period: Ordovician
Genesis: Volcex Form:
Main texture: Min. distribution: Semi-massive (20-50 % ore minerals)
Main grain size: Medium grained (1-3 mm) Main alteration: Chloritisation
Strike/Dip: Direction:
Plunge:
Stratigraphic classification of host rock
Era: Paleozoic Period: Ordovician
Province: Caledonides
Geotec.unit: Trondheim Nappe Complex
Tectonic complex: Støren Nappe
Igneous complex:
Group: Støren Group Formation:

Mineralogy
Relationship Mineral Amount
Gangue mineral Chlorite Major mineral (>10%)
Gangue mineral Quartz Major mineral (>10%)
Gangue mineral Actinolite Major mineral (>10%)
Gangue mineral Biotite Subordinate mineral (1-10%)
Ore mineral Pyrrhotite Major mineral (>10%)
Ore mineral Pyrite Major mineral (>10%)
Ore mineral Magnetite Subordinate mineral (1-10%)
Ore mineral Chalcopyrite Subordinate mineral (1-10%)

Lithology:
Relationship Rock Origin
Host rock Greenstone Extrusive
Original rock :Basalt
Metamorphic facies :Greenschist

Structures
Location: Type: Orientation(360 gr.): Relation to min.:
Host rock Foliation Strike/Dip :255 / 50 Post-mineralisation ;...Effect :Controls
Host rock Mineral lineation Dir./Plunge :60 / 40 Post-mineralisation ;...Effect :Modifies

Information(s) in free text format
Free text
Sandsvegruva befinner seg en knapp kilometer nordøst for Selbuvegen, drøy 100 m øst for Svetjønna. Gruva består av en stoll som går i sørlig retning inn i åsen. Stollen er ca. 20 m lang med et lite tverrslag mot øst 8 m inne i gruva. Det er en tipp på om lag 120 kbm foran gruveåpningen. I stollåpningen er det en svært skifrig klorittskifer med en utpreget lineasjon (060/40) og foliasjon (255/50). Enkelte cm-tykke striper med pyritt (semimassiv), ellers svært rustent. Mineralisering på tipphaugen består vesentlig av pyritt og magnetkis i rik impregnasjon i matriks dominert av kvarts og aktinolitt, lokalt også en god del kobberkis, samt magnetitt.

Photo(s) from the Deposit area:
Photo no. 1 showing Tipphaug, Sandsve"
Photo no. 2 showing Stollen, Sandsve"

Bibliography:
From NGU's Reference Archive:
Torske, Tore , 1965
Geology of the Mostadmarka and Selbustrand area, Trøndelag.
;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU; No.232;1-83 + ka pages
Abstract:
The bedrock of the area consists of metamorphic epiclastic, volcanic, and intrusive rocks of assumed Lower Ordovician age, assigned to, and lithologically matching the rocks of, the Røros, Støren and Lower Hovin Groups of the Trondheim Region. A detailed petrographic description of the rock varieties is given. The metamorphic grade of all rocks corresponds to the Greenschist Facies. - Small ore deposits occur in connection with the volcanic rocks. They comprise pyrite-pyrrhotite ores of the Leksdal Type, mixed pyrite-magnetite ores, and iron oxide ores. - Lithological variations of the sedimentary rocks is tentatively correlated with events during the early periods of the Caledonian Orogeny. - The volcanism within the area seems to have started with a phase of explosive activity, followed by extrusion (mostly submarine) of copious amounts of spilitic lavas; towards the end of the main period of volcanism a new episode of explosive activity has produced what is called the upper pyroclastic horizon, comprising rocks ranging from coarse volcanic breccia to finegrained tuffs. - The intrusive rocks consist mainly of saussurite gabbros and quartz keratophyres. The latter are thought to be intrusive rather than effusive, and evidence is offered to support this. In some places the character of pyroclastic material points to a quartz keratophyre parentage. Thus, quartz keratophyres may have occurred both as intrusive and volcanic rocks.

Fieldsamples
Sample No. Sample type Miscellanrous
HK90-008 Bedrock
Sampler: Karlstrøm, H.
Comment: Bånd og stikk av py i grønnskifer.
No. of registrated element analyses = 1
HK90-009 Bedrock
Sampler: Karlstrøm, H.
Comment: Rustent tuffittisk bånd i gr.sk. med py-impr. og noe cpy.
No. of registrated element analyses = 1
HK90-010 Bedrock
Sampler: Karlstrøm, H.
Comment: Svak py-min. i kalkholdig kvartskeratofyr. Noe cpy.
No. of registrated element analyses = 1
HK90-011S Bedrock
Sampler: Karlstrøm, H.
Comment: Samleprøve.
No. of registrated element analyses = 1
SANDSVE-1 Dump
Sampler: T. Bjerkgård/...Stored: Løkken
Comment: Banded, semimassive finegrained pyrite with bands of magnetite in quartz
No. of registrated element analyses = 1
SANDSVE-2 Dump
Sampler: T. Bjerkegård/...Stored: Løkken
Comment: Massive, mm-grained pyrite-pyrrhotite with accessory chalcopyrite in quartz-actinolite matrix
No. of registrated element analyses = 1
SANDSVE-3 Dump
Sampler: T. Bjerkgård/...Stored: Løkken
Comment: Semimassive/massive pyrite in quartz, mm-lenses with magnetite
No. of registrated element analyses = 1
NB! All analyse values are shown at the end of the printout.:

Name of Locality: Skjerp 1
(Object Id: 37459 6,01,00)
Location
County: Trøndelag Municipality: Malvik (5031)
Map 1:50000: Stjørdal (1621-1) Map 1:250000: Trondheim
Coordinate system: EU89-UTM Zone 32
East: 593551 m. North: 7021467 m.
Longitude: 10.8669220 Latitude: 63.3097920
Show on map
Resource
Resource Type: Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) Resource Subtype: Sulphides
Element(s): Kis
Resources and production
Activity: Pitting Reserves:
Operating method: Historical production:


Mineralogy
Relationship Mineral Amount
Gangue mineral Quartz Major mineral (>10%)
Gangue mineral Chlorite Subordinate mineral (1-10%)
Ore mineral Pyrite Major mineral (>10%)
Ore mineral Magnetite Major mineral (>10%)

Lithology:
Relationship Rock Origin
Host rock Greenstone Extrusive
Original rock :Basalt
Metamorphic facies :Greenschist

Structures
Location: Type: Orientation(360 gr.): Relation to min.:
Host rock Fold axis Dir./Plunge :60 / 35 Post-mineralisation ;...Effect :Modifies

Information(s) in free text format
Free text
En liten vannfylt synk, ca4x3 m i omriss med en 20 kbm tipp. Kun svak pyrittimpregnasjon i kvartsrik bergart å finne. Nord for synken er det en kvartsrik sone med svak disseminasjon av magnetitt (susc. 15-25).

Name of Locality: Skjerp 2
(Object Id: 37460 6,02,00)
Location
County: Trøndelag Municipality: Malvik (5031)
Map 1:50000: Stjørdal (1621-1) Map 1:250000: Trondheim
Coordinate system: EU89-UTM Zone 32
East: 593542 m. North: 7021502 m.
Longitude: 10.8667630 Latitude: 63.3101080
Show on map
Resource
Resource Type: Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) Resource Subtype: Sulphides
Element(s): Kis
Resources and production
Activity: Pitting Reserves:
Operating method: Historical production:


Information(s) in free text format
Free text
Overgrodd, vannfylt synk, 4x2.5 m i omriss. Ingen blotninger og tippen er fullstendig overgrodd.

Analyse Results
from
Deposit Area 5031 - 006 Sandsve

Element analyses
( *=parts pr. million, #=parts pr.billion, Negative values means below detection limit value.)
Sample No. Sample Type Cu* Zn* Pb* Co* Ni* Ag* Au#
HK90-008 Bedrock 1183 34 20 69 114 .5 55.0
HK90-009 Bedrock 2292 89 2 11 13 .4 9.0
HK90-010 Bedrock 474 25 2 14 10 .3 6.0
HK90-011S Bedrock 1069 42 6 21 34 .5 15.0
SANDSVE-1 Dump 5020 89 3 83 4 .9 16.0
SANDSVE-2 Dump 24500 577 10 151 15 3.5 141.0
SANDSVE-3 Dump 11200 283 12 157 8 4.1 126.0
------------------
Sample No. Pt# Pd# As* Cd* Ba* Mo* Sn* Sb* Bi*
HK90-008 6.0 5.0 122 .2 1 39.00 2 27
HK90-009 1.0 2.0 2 1.1 1 1.00 2 2
HK90-010 1.0 2.0 8 .2 1 5.00 2 2
HK90-011S 1.0 3.0 35 .6 1 4.00 2 5
SANDSVE-1 -5.0 1.0 33 .8 10 27.00 -1 -1 -1
SANDSVE-2 -5.0 1.0 81 5.1 40 64.00 -1 2 2
SANDSVE-3 -5.0 1.0 84 1.7 30 32.00 -1 2 2
------------------
Sample No. Se* Ga* Ge* In* S% V* Cr* Mn* Fe%
HK90-008 13.80 93 34 74 14.65
HK90-009 .32 76 95 551 9.62
HK90-010 .79 11 9 200 2.25
HK90-011S 3.04 41 28 313 5.42
SANDSVE-1 96.00 2.00 -1.00 -1.00 21 6 811 25.90
SANDSVE-2 153.00 2.00 -1.00 -1.00 12 9 1020 42.20
SANDSVE-3 159.00 -1.00 -1.00 -1.00 5 6 273 40.50
------------------
Sample No. Th* U* W* Sr* Nb* Ta* La* B* P*
HK90-008 2.00 5.00 1 1.0 2.00 2
HK90-009 1.00 5.00 1 12.0 2.00 2
HK90-010 1.00 5.00 1 20.0 2.00 6
HK90-011S 1.00 5.00 1 22.0 2.00 4
SANDSVE-1 -1.00 -1.00 -1 -1.00 -1.00 80
SANDSVE-2 -1.00 -1.00 -1 -1.00 -1.00 200
SANDSVE-3 -1.00 -1.00 -1 -1.00 -1.00 30
------------------
Sample No. Sc* Ti* Te*
HK90-008
HK90-009
HK90-010
HK90-011S
SANDSVE-1 -1.00 -50 2.00
SANDSVE-2 -1.00 220 3.00
SANDSVE-3 -1.00 -50 2.00

The fact sheet was created on 04.05.2024
Questions or comments regarding the fact sheet can be emailed to:
ressursdatabaser@ngu.no
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