(Last updated: 30.11.2015)
|
|
Norsk versjon | ||||
| THE ???? DATABASE | |||||
| Occurence 0 - 000 FEIL | |||||
| (Object Id: ) (Last updated: 30.11.2015) |
|||||
|
|
| Location |
| County: | Municipality: | Mangler () |
| Map 1:50000: | Mykland (1512-2) | Map 1:250000: | Arendal |
| County: | UTM-Zone 33 - EUREF89/WGS84 |
|
|
| Resource |
| Resource Type: | Special metals (Nb,Ta,Be,Li,Sc,REE) | Resource Subtype: | REE-metals | |
| Element(s): | REE U |
| Importance |
| Raw material meaning: | Little Importance (reg. 04.05.2015) |
Mineralization |
| Era: | Proterozoic | Period: | Neoproterozoic | |
| Dating: | 1060 million year | Method: | ||
| Genesis: | Pegmatite formation | Form: | ||
| Main texture: | Min. distribution: |
| Main grain size: | Main alteration: |
| Strike/Dip: | Direction: | |||
| Plunge: |
| Stratigraphic classification of host rock |
| Era: | Period: |
| Province: | ||
| Geotec.unit: | ||
| Tectonic complex: | ||
| Igneous complex: |
| Group: | Formation: |
Mineralogy |
| Relationship | Mineral | Amount | |
| Gangue mineral | Quartz | Major mineral (>10%) | |
| Gangue mineral | Albite | Major mineral (>10%) | |
| Gangue mineral | Plagioclase | Major mineral (>10%) | |
| Gangue mineral | Muscovite | Major mineral (>10%) | |
| Ore mineral | Xenotime | Accessory mineral (<1%) | |
| Ore mineral | Samarskite | Accessory mineral (<1%) | |
| Ore mineral | Monazite | Accessory mineral (<1%) | |
| Ore mineral | Allanite | Accessory mineral (<1%) |
Lithology: |
| Relationship | Rock | Origin | |
| Host rock | granite pegmatite | Intrusive Original rock :Granite pegmatite |
Information(s) in free text format |
| Free text |
| The Bjortjenn location comprises a partly mined granitic pegmatite with a core consisting of massive quartz and plagioclase. Locally, the pegmatite underwent intensive muscovitisation and albitisation. |
Bibliography: |
| From NGU's Reference Archive: |
| Müller, Axel ; Ihlen, Peter ; Kronz, Andreas , 2006 |
| Potential resources of quartz and feldspar raw material in Sørland IV: Relationships between quartz, feldspar and mica chemistry and pegmatite type |
| ;Norges geologiske undersøkelse;RAPPORT;NGU-rapport; No.2005.075;94 s. pages |
| Abstract: | |
| Forkortet: The Sveconorwegian pegmatite fields of Froland and Herefoss is located at the western edge of the Bamble terrane in southern Norway. The field comprises different pegmatite types which can be roughly classified as follows: (1) PGr - pegmatitic granites, (2) GP - granite pegmatites, (3) NaP - Plagioclase-dominant granitic pegmatites, (4) ZoP - zoned granitic pegmatites, (5) KP - K-feldspar-dominant granitic pegmatites, (6) PD - muscovites pegmatite/granite dykes and (7) HP - zoned pegmatites related to the Herefoss pluton. Types (1) to (5) and (7) represent relative primitive pegmatites in respect to granitic differentation containing predominantly Fe phlogopite and Mg siderophyllite. Type (6) has an more evolved chemistry reflected by zinnwaldite. |
| Müller, Axel; Kearsley, Anton; Spratt, John; Seltmann, Reimar , 2012 |
| Petrogenetic implications of magmatic garnet in granitic pegmatites from southern Norway |
| ;Mineralogical Association of Canada;ARTIKKEL;Canadian mineralogist; No.50 (4);1095-1115 pages |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||||
| 62370 | Bedrock |
|
| NB! All analyse values are shown at the end of the printout.: |
| The fact sheet was created on 06.05.2024 |
Copyright © 2024 Geological Survey of Norway |