The Central Sweden Projects comprise four early-stage exploration projects at Kullberget, Kramsta, Simesvallen and Sumåssjön with a combined area of 197.2 km2 and covering various mafic sills and intrusive bodies associated with the Ljusdal Batholith (LJB), a composite granitoid body extending over an area of approximately 130 km x 100 km and which has been intruded by iron-titanium-vanadium mineralised mafic intrusions. Previous exploration has outlined a number of prospective targets which were the subject of historical mineral estimates at Sumåssjön and Simesvallen, while historical trial mining occurred at Kullberget-Storåsen and a well-defined magnetic geophysical anomaly is defined at Kramsta.
The Sumåssjön Project area contains two major mafic units, represented by:
- an eastern magnetic unit, which is 7.5 km long, containing vanadium mineral occurrences and areas of historical mining activity
- a western magmatic unit, forming an arcuate 3.5 km long magnetic geophysical anomaly. Associated with the western magnetic anomaly are recorded vanadium occurrences and historical mining sites
The Kramsta Project area is interpreted to host a 5 km by 3 km ellipsoid coincident gravity – magnetic geophysical structure, with strong magnetic anomalies interpreted to represent four gabbro intrusions with potential to host vanadium mineralisation.
The Simesvallen tenement covers a structure which is an approximately 15km long magnetic unit, folded into elliptical form, potentially indicating sills or lopolithic gabbro intrusions . The known mineralisation is hosted within a mafic intrusion with a 1.5 km x 0.75 km surface exposure. To date, three prospect areas are defined, namely Simesvallen East, Spannarslatten and Svedasen.
- Simesvallen East is centred on the area drilled historically, where modelling of the ground magnetic data has shown that the magnetic body is at least 24 m thick at SIM82003 and increases to approximately 50 m thick some 340 m to the east.
- At Spannarslatten, an intense (to 745 nT), elongated ground magnetic anomaly extends east-west for at least 1,000 m in length and is modelled as two shallow magnetic bodies dipping 35˚ to the north with a thickness of 40 m and 30 m, respectively.
- At Svedasen, the ground magnetic data is modelled as a circular, flat-lying intrusion comprising two magnetic southeast-dipping bodies about an east-west axis and varying in thickness from 18 m to 96 m.
The Kullberget Project represents the northwestern-most tenement in the Central Sweden project area and is situated 15 km directly northwest of the town of Ljusdal. A rail line connects Ljusdal to the port at Galve 150 km to the south. The Kullberget – Storåsen structure comprises a magnetic anomaly, approximately 6 km long and divided into western (Kullberget) and eastern (Storåsen) sections. At Kullberget, vanadium-titanium-magnetite mineralisation outcrops in a norite-gabbro, where previous rock chip geochemical sampling returned 20% Fe, 7.6% TiO2 and 0.53% V. At Storåsen, limited historical trial mining of this intrusive has occurred with historical geochemical sampling demonstrating the outcropping vanadium mineralisation grades between 12-20% Fe, 0.94-6.0% TiO2 and from 0.06-0.1% V.
