Fact Sheet for Deposit Area 1636

					Norsk versjon
	THE ORE DATABASE
	Deposit Area 1636 - 016
	(Last updated 13.apr.2020)

Name of Deposit Area : Ås skjerp

(Object Id : 1636,016,00,00)

Location

County :

Sør-Trøndelag (16)

Municipality :

Meldal (1636)

Map 1:50000:

Løkken (1521-3)

Map 1:250000:

Trondheim

Marking point:

Longitude:

9.5496420

Latitude:

63.1310590

EU89-UTM Zone 32

(Coordinates IS confirmed)

X-coord:

527715 m.

Y-coord:

7000310 m.

Commodity

	Main Type:	Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn)	Sub Type:	Copper
			Element(s):	Cu Zn

Production

Activity:	Test mining	Reserves:
Prod. method:	Underground mining	Production:
Prod. status:		Volume of dump:	500 m3

Importance

Public: (No data)

Economical: Minor interest , (Confirmed 02.des.2019 by Jan Sverre Sandstad)

Mineralization

Era: Paleozoic Period: Ordovician

Dating: Method:

Genesis: Volcex Form: Lens

Main texture: Banded Min. distribution: Massive (>50 % ore minerals)

Main grain size: Fine grained (< 1 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 Actinolite Major mineral (>10%)

Gangue mineral Quartz Major mineral (>10%)

Ore mineral Pyrite Major mineral (>10%)

Ore mineral Sphalerite Major mineral (>10%)

Ore mineral Chalcopyrite Major mineral (>10%)

Ore mineral Pyrrhotite Accessory mineral (<1%)

Lithology:

Relationship Rock Origin

Wall rock Greenstone Extrusive
Original rock :Basalt

Metamorphic facies :Greenschist

Information(s) in free text format

Free text

Skjerpet består av en V-Ø orientert, vannfylt skråsynk med sidevegger på 5 x 12 m og 2-4 m ned til vann-nivå. Det ligger i tett granskog, 50 m vest for ei myr mellom Gruvdammen i nord og Bjørtjønna i sør. En relativt stor tipp med volum på 5-600 m2 viser at synken må være relativt dyp, men McQueen (1983) anslår produksjonen å bare være noen hundre tonn. Forekomsten ligger i den stratigrafisk nedre delen av grønnsteinsekvensen og antagelig på samme nivå som Dragset. En massiv sulfidsone er ikke synlig, men prøver av denne er godt representert på tippen. Malmen ligner Dragsetforekomsten og både båndet, sinkblenderik og dels kobberkisrik malm finnes. Massiv pyrittmalm med kvartsrik matriks har lavere basemetallinnhold. En mindre tilførselssone er også anriket på sink ifølge McQueen (1983).

Bibliography:

References not to be found in NGU's Reference Archive.:

McQueen, K.G., 1983: The geology, structure and ore petrology of the Dragset sulphide deposit, near Løkken. Report Orkla Industrier A/S (BV 1850)

Fieldsamples

Sample No. Sample type Miscellanrous

JS-M1913 Dump

Sampler :J.S. Sandstad/...Stored :Løkken/...Size(kg) :2

Comment :Massive pyrite-sphalerite-chalcopyrite ore, banded

No. of registrated element analyses = 1

JS-M1914 Dump

Sampler :J.S. Sandstad/...Stored :Løkken/...Size(kg) :2

Comment :Massive sphalerite-chalcopyrite-pyrite ore, fine grained

No. of registrated element analyses = 1

JS-M1915 Dump

Sampler :J.S. Sandstad/...Stored :Løkken/...Size(kg) :2

Comment :Massive pyrite-chalcopyrite+sphalerite ore, quartz matrix

No. of registrated element analyses = 1

NB! All analyse values are shown at the end of the printout.:

Analyse Results

from

Deposit Area 1636 - 016 Ås skjerp

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#

JS-M1913 Dump 8640 208000 60 12 27 9.9 161.0

JS-M1914 Dump 14500 91300 42 47 24 8.8 113.0

JS-M1915 Dump 9680 622 28 109 17 5.8 72.0

------------------

Sample No. Pt# Pd# As* Cd* Ba* Mo* Sn* Sb* Bi*

JS-M1913 -5.0 -1.0 291 652.0 10 51.00 5 2 17

JS-M1914 -5.0 -1.0 159 321.0 -10 25.60 1 1 17

JS-M1915 -5.0 -1.0 203 3.0 -10 14.40 1 1 13

------------------

Sample No. Se* Ga* Ge* In* S% V* Cr* Mn* Fe%

JS-M1913 385.00 9.37 0.89 6.16 10.00 63 6 321 28.40

JS-M1914 151.00 6.90 0.39 3.11 10.00 63 22 319 28.50

JS-M1915 173.00 9.70 0.43 0.20 10.00 114 38 571 35.40

------------------

Sample No. Th* U* W* Rb* Sr* Y* Zr* Nb* Ta*

JS-M1913 0.02 10.70 -0 0.9 9.7 0.9 5 0.20 -0.05

JS-M1914 0.02 3.50 0 0.3 7.8 1.8 8 0.30 -0.05

JS-M1915 0.18 7.20 -0 0.2 52.8 9.1 23 0.80 0.05

------------------

Sample No. Cs* La* Ce* Li* Be* Na* Mg* Al* P*

JS-M1913 0.26 -0.50 0.40 1 0 0 0 0 10

JS-M1914 0.08 -0.50 0.83 1 -0 0 0 1 20

JS-M1915 0.09 1.50 4.30 3 -0 0 1 2 470

------------------

Sample No. K * Ca* Sc* Ti* Te* Hf* Re* Tl*

JS-M1913 0 0 1.60 0 23.80 0.10 5 1

JS-M1914 0 1 4.70 0 16.65 0.20 2 0

JS-M1915 0 3 8.50 0 12.60 0.50 7 0

Era:	Paleozoic	Period:	Ordovician
Dating:		Method:
Genesis:	Volcex	Form:	Lens
Main texture:	Banded	Min. distribution:	Massive (>50 % ore minerals)

	Province:	Caledonides
	Geotec.unit:	Trondheim Nappe Complex
	Tectonic complex:	Støren Nappe
	Igneous complex:

Relationship	Mineral	Amount
Gangue mineral	Chlorite	Major mineral (>10%)
Gangue mineral	Actinolite	Major mineral (>10%)
Gangue mineral	Quartz	Major mineral (>10%)
Ore mineral	Pyrite	Major mineral (>10%)
Ore mineral	Sphalerite	Major mineral (>10%)
Ore mineral	Chalcopyrite	Major mineral (>10%)
Ore mineral	Pyrrhotite	Accessory mineral (<1%)

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

Sample No.	Sample Type	Cu*	Zn*	Pb*	Co*	Ni*	Ag*	Au#
JS-M1913	Dump	8640	208000	60	12	27	9.9	161.0
JS-M1914	Dump	14500	91300	42	47	24	8.8	113.0
JS-M1915	Dump	9680	622	28	109	17	5.8	72.0

Sample No.	Pt#	Pd#	As*	Cd*	Ba*	Mo*	Sn*	Sb*	Bi*
JS-M1913	-5.0	-1.0	291	652.0	10	51.00	5	2	17
JS-M1914	-5.0	-1.0	159	321.0	-10	25.60	1	1	17
JS-M1915	-5.0	-1.0	203	3.0	-10	14.40	1	1	13

Sample No.	Se*	Ga*	Ge*	In*	S%	V*	Cr*	Mn*	Fe%
JS-M1913	385.00	9.37	0.89	6.16	10.00	63	6	321	28.40
JS-M1914	151.00	6.90	0.39	3.11	10.00	63	22	319	28.50
JS-M1915	173.00	9.70	0.43	0.20	10.00	114	38	571	35.40

Sample No.	Th*	U*	W*	Rb*	Sr*	Y*	Zr*	Nb*	Ta*
JS-M1913	0.02	10.70	-0	0.9	9.7	0.9	5	0.20	-0.05
JS-M1914	0.02	3.50	0	0.3	7.8	1.8	8	0.30	-0.05
JS-M1915	0.18	7.20	-0	0.2	52.8	9.1	23	0.80	0.05

Sample No.	Cs*	La*	Ce*	Li*	Be*	Na*	Mg*	Al*	P*
JS-M1913	0.26	-0.50	0.40	1	0	0	0	0	10
JS-M1914	0.08	-0.50	0.83	1	-0	0	0	1	20
JS-M1915	0.09	1.50	4.30	3	-0	0	1	2	470

Sample No.	K *	Ca*	Sc*	Ti*	Te*	Hf*	Re*	Tl*
JS-M1913	0	0	1.60	0	23.80	0.10	5	1
JS-M1914	0	1	4.70	0	16.65	0.20	2	0
JS-M1915	0	3	8.50	0	12.60	0.50	7	0