Fact Sheet for Deposit Area 926

					Norsk versjon
	THE INDUSTRIAL MINERAL DATABASE
	Deposit Area 926 - 306
	(Last updated 06.feb.2015)

Name of Deposit Area : Glamsland

(Object Id : 0926,306,00,00)

Location

County :

Aust-Agder (09)

Municipality :

Lillesand (0926)

Map 1:50000:

Lillesand (1511-1)

Map 1:250000:

Arendal

Marking point:

Longitude:

8.3025480

Latitude:

58.2583130

EU89-UTM Zone 32

(Coordinates IS confirmed)

X-coord:

459071 m.

Y-coord:

6457681 m.

Commodity

Main Type:

Feldspar

Sub Type:

Pegmatitic feldspar

Production

Activity:	Mining	Reserves:
Prod. method:	Open pit mining	Production:
Prod. status:	Disused, closed	Volume of dump:

Importance

Public: Local Importance (reg. 07.02.2015)

Economical: Could be significant , (Confirmed 06.feb.2015 by Havard Gautneb)

Products

Element/product Crude ore grade or quality

CHERAM

GLASRA

Operations

From - To Activity Comments

Regular production

Mineralization

Era: Period:

Dating: Method:

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:

Mineralogy

Relationship Mineral Amount

Not defined Quartz Major mineral (10-50%)

Not defined Plagioclase Major mineral (10-50%)

Not defined Potassic feldspar Major mineral (10-50%)

Not defined Muscovite Subordinate mineral (1-10%)

Not defined Biotite Subordinate mineral (1-10%)

Not defined Chlorite Accessory mineral (<1%)

Not defined Garnet Accessory mineral (<1%)

Information(s) in free text format

Free text

Glamsland pegmatittbrudd ligger ca. 3 km vest for Lillesand. Pegmatitten består hovedsakelig av det som på Sørlandet kalles "tint" som er en grovkornig blanding mineraler av granittisk sammensetning. Ca.40% oligoklas, ca, 30% mikroklin, ca. 27% kvarts og 2 - 3% jernholdige mineraler. Like ved bruddene, ble det i 1968 bygd ferdig et flotasjonsverk som floterte ut kvarts, plagioklas (oligoklas), kalifeltspat (mikroklin) og biotitt. Forekomsten ble drevet de siste år av Sibelco Nordic, men driften ble nedlagt i 2011.

Bibliography:

From NGU's Reference Archive:

Kristoffersen, Marte , 1997

Evaluering av potensielle pegmatittforekomster i Glamslandfeltet.

;NTNU Bergavd.;AVHANDLING

Fieldsamples

Sample No. Sample type Miscellanrous

HK-11 Hand specimen

Sampler :Peter Ihlen/...Stored :Løkken

Comment :Gulrosa K-feltspat med noen innesl. av kvarts

No. of registrated oxide analyses = 1

HK-2 Hand specimen

Sampler :Peter Ihlen/...Stored :Løkken

Comment :K-feltspat

No. of registrated oxide analyses = 1

HK-3 Hand specimen

Sampler :Peter Ihlen/...Stored :Løkken

Comment :Plagioklas

No. of registrated oxide analyses = 1

HK-5 Hand specimen

Sampler :Peter Ihlen/...Stored :Løkken

Comment :Blekrosa K-feltspat

No. of registrated oxide analyses = 1

HK-7 Hand specimen

Sampler :Peter Ihlen/...Stored :Løkken

Comment :Blekrosa K-feltspat med kvartsinneslutninger

No. of registrated oxide analyses = 1

HK-9 Hand specimen

Sampler :Peter Ihlen/...Stored :Løkken

Comment :Gulrosa K-feltsp. m. parall. bånd av grafisk kv.

No. of registrated oxide analyses = 1

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

Analyse Results

from

Deposit Area 926 - 306 Glamsland

Oxide analyses
( All values are in % )

Sample No. Sample Type SiO2 Al2O3 TiO2 Fe2O3 MgO CaO Na2O

HK-11 Hand specimen 69.90 16.30 0.00 0.03 0.01 0.08 1.68

HK-2 Hand specimen 70.50 19.00 0.00 0.09 0.04 2.21 8.27

HK-3 Hand specimen 65.00 18.00 0.00 0.04 0.00 0.09 1.90

HK-5 Hand specimen 66.60 17.10 0.00 0.01 0.02 0.08 2.17

HK-7 Hand specimen 65.40 18.30 0.00 0.04 0.01 0.10 2.31

HK-9 Hand specimen 65.50 18.40 0.00 0.05 0.01 0.24 2.67

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

Sample No. K2O Sum

HK-11 11.73 100.00

HK-2 0.68 101.00

HK-3 13.54 99.00

HK-5 12.39 98.00

HK-7 13.01 99.00

HK-9 12.22 99.00

	Element/product	Crude ore grade or quality
	CHERAM
	GLASRA

	Era:		Period:
	Dating:		Method:
	Genesis:		Form:
	Main texture:		Min. distribution:

	Province:
	Geotec.unit:
	Tectonic complex:
	Igneous complex:

Relationship	Mineral	Amount
Not defined	Quartz	Major mineral (10-50%)
Not defined	Plagioclase	Major mineral (10-50%)
Not defined	Potassic feldspar	Major mineral (10-50%)
Not defined	Muscovite	Subordinate mineral (1-10%)
Not defined	Biotite	Subordinate mineral (1-10%)
Not defined	Chlorite	Accessory mineral (<1%)
Not defined	Garnet	Accessory mineral (<1%)

Sample No.	Sample Type	SiO2	Al2O3	TiO2	Fe2O3	MgO	CaO	Na2O
HK-11	Hand specimen	69.90	16.30	0.00	0.03	0.01	0.08	1.68
HK-2	Hand specimen	70.50	19.00	0.00	0.09	0.04	2.21	8.27
HK-3	Hand specimen	65.00	18.00	0.00	0.04	0.00	0.09	1.90
HK-5	Hand specimen	66.60	17.10	0.00	0.01	0.02	0.08	2.17
HK-7	Hand specimen	65.40	18.30	0.00	0.04	0.01	0.10	2.31
HK-9	Hand specimen	65.50	18.40	0.00	0.05	0.01	0.24	2.67

Sample No.	K2O	Sum
HK-11	11.73	100.00
HK-2	0.68	101.00
HK-3	13.54	99.00
HK-5	12.39	98.00
HK-7	13.01	99.00
HK-9	12.22	99.00