Fådals Mines, Tynset, Innlandet, Norwayi

Regional Level Types
Fådals Mines	Mine
Tynset	Municipality
Innlandet	County
Norway	Country

Thanks to a map in Berg et al (2016) it was possible to reconstruct the location of these mines. The NGU confirms the name at their fact sheet. They are nicely visible at an aerial picture of 2013 at kart.1881.no. The NGU were used. Around 62.32766°N 10.6146°Ø are more mines.

NGU:
The Fådal mine is located north of the valley above the tree line at an altitude of about 930 m.a.s.l. It is easy accessible by road to the farm Klettvangan and is about 700 m north of this farm. History: Very little is known about the mine. According to Egge (1913), the deposit was exploited as a copper mine by Faadals kobberverk from 1722 to 1747 and produced 133 t copper metal. It was also exploited by Folldal Verk. Egge (1913) reports that the company running the Røstvangen mines was thinking about connecting a cable way from the Fådal Mine to the line going from Røstvangen to Røsten railway station. Geology: The mine consists of two major workings, which are about 250 m apart. The southern field consists of two deep trenches, whereas the northern field consists of four vertical shafts. The depths of the workings are uncertain The dumps are quite significant and the total size of the dumps are about 12000 m3, of which the northern field contain about 8000 m3 and the southern about 3800 m3. In addition there are several smaller workings along strike and the total extent of the ore field is about 2 km. The extent of the ore to depth is not known. The ore occurs in two major zones, which are parallel to the regional foliation in the area, which is N-S striking (10-30o) and dipping vertical or steeply towards west. The two zones are about 2.5 m apart and is separated by country rock. There are also several shorter and thin ore lenses along strike. The thickness of the major ore zones are difficult to estimate. It was observed in some of the pits and walls of the trenches to be up to 0.5 m. The trenches in the southern ore field are up to 5 m wide, indicating that the ore zones must have been thicker at places. The ore consists mainly of massive, fine grained pyrrhotite with minor aggregates of chalcopyrite and locally accessory sphalerite. Pyrite was observed in one of the trenches in a zone of 20-30 cm massive ore, with some sphalerite but this type was not found in the dumps. The massive ore typically contains mm- to cm-sized, partly rounded fragments of quartz and some chlorite and sericite rich schist fragments. The massive ore is surrounded by a 0.5 to 2 m wide zone of weakly pyrrhotite and chalcopyrite impregnated biotite-chlorite-sericite schist, occasionally with mm-sized amphibole needles. The sulfides occurred in mm-sized streaks. The schist is quartz rich and contains minor mm-sized euhedral garnet crystals. Larger garnets (up to 2-3 mm) were found in dump samples at the northern ore field. The deposit is hosted in semipelitic to psammitic chlorite-muscovite schists, with varying chlorite/muscovite ratio and content of quartz. Biotite, garnet and amphibole were only observed close to the ore zones, meaning that these minerals belong to the alteration assemblage. The content of chlorite also seems to increase close to the ore zones. The southernmost pit (close to the farm Haugen) was observed to contain coarse grunerite (1-2 cm crystals) and 1-3 mm large garnets associated with the pyrrhotite. This assemblage was not observed elsewhere along the ore zones.

Other Databases

Link to Geological Survey of Norway:	6441

Other Regions, Features and Areas containing this locality

References