Preview SW Deposit
- Located approximately 40 km north-east of Laronge with access from HWY 102 and maintained local trail to deposit
- Located over 3 dispositions S-107154, S-107877, and S-107878 (843 Ha)
- Powerlines near property via Contact Lake deposit
- Community of Missinipi is located approximately 30 km North of the deposit
- Multiple Geophysical surveys have been conducted on the property since it’s discovery in 1934
- Preview SW has had multiple drill, sample and channel programs since 1939 with each new program showing more promising results
- Preview SW Deposit is split in multiple zones; Preview SW, Preview A, B, & C Zones, Clearwater A & B, and Preview North (Adit)
Property Scale Geology
- Underlain by early Proterozoic metavolcanic and metasedimentary rocks which are intruded by ultramafic to diorite sills. This is believed to be related to the Contact Lake intrusion adjacent to deposit (Livingstone & Christian, 2017)
- Rocks in this area have been subjected to at least two folding events and are upper greenschist to lower amphibolite in metamorphic grade
- Diorite is the host rock in most of the zones within the deposit, ranging compositionally from quartz diorite to gabbro, but no correlation is seen between these phases and mineralization (Livingstone & Christian, 2017)
Deposit Information
- The area was first staked in 1937 by G. Gillies and were soon acquired by Preview Mines Ltd. In 1938. (Livingstone & Christian, 2017)
- Studer Mines Ltd. Then acquired the rights in 1949, which were then optioned by Westfield Minerals Ltd. In 1959
- Cameco acquiried the property 1979 and 1984. Under Cameco, extensive exploration and drilling programs were conducted all over the property untill 2004 when they returned the property to V. Studer
- La Ronge Gold Corp. (later changed to Select Sands Corp.) acquired the rights to the Preview Sw claims in 2011 and released a resource estimate the next year; At a base-case cut-off grade of 0.5 g/t Au the deposit was estimated to contain an Indicated Mineral Resource of 1.958 million tonnes grading 2.12 g/t Au and an Inferred Mineral Resource of 3.7 million tonnes grading 2.09 g/t Au (Simpson, 2016).
- In August of 2016, Comstock Metals Ltd. Acquired the Preview SW claims. Comstock released an updated resource in 2016: (Simpson, 2016)
- Mas Gold Corp. reached an agreement with Comstock metals in January of 2022 to acquire 100% of the Preview SW claims, with the sale completing March 31st, 2022 granting Mas Gold 100% ownership. (Mas Gold Corp & Comstock Metals, 2022)
Deposit Highlights
- All zones of the deposit Au is structurally controlled and found in quartz veins located in and on the boundaries of sheared zones of the diorite sills.
- Multiple sub-parallel (1 – 10 m wide), NE trending structural shear zones run through the deposit and are persistent at depth. Dilatant structures (where two or more substructures meet) containing quartz in these shear zones directly relate to Au mineralization (Simpson, 2016)
- Arsenopyrite is the main sulphide associated with Au mineralization, others include Chalcopyrite, pyrite, pyrrhotite.
- Alteration increases as you move SW through the deposit, consisting primarily of biotite pseudomorphing hornblende and tourmaline creating biotite banding
Completed Work (MAS)
- Completed a 5 hole (996 m) drill program in winter of 2022 on the Preview SW South and Adit zones.
Future Work / Plans
- Follow up on Winter 2022 drill results for future drill programs in order to increase the resource
- Perform mapping and collect soils / channel samples to follow up on historic Au showings near the deposit in hopes to expand resource
Ownership Overview
MAS Gold Corp. 100% Owned Properties occupy key positions at the transition between the La Ronge Domain and Kisseynew Domain. MAS Gold Corp has been active in La Ronge Gold Belt since 1990’s. Total MAS Gold Corp holdings: 33, 843 hectares (83, 628 acres). All properties are 100% owned.