The FM or Zymo occurrence is located on the north bank of Mulwain Creek which empties into Zymoetz River, about 48 kilometres west of the community of Smithers.

The Zymo property is located in the Stikine Terrane at the south edge of Bowser Basin, and is largely underlain by clastic sedimentary rocks of the Skeena (Early Cretaceous), Bowser (Middle Late Jurassic) and Hazelton (Early Jurassic) groups, as well as Hazelton Group volcanics in the southeast part of the claims. These rocks have been intruded by diorite and granite of the Eocene Nanika Intrusions and Late Cretaceous Bulkley Plutonic Suite. Locally, the property is on the contact between metasedimentary rocks of the Lower Cretaceous Kitsuns Creek Formation (Skeena Group) and a Cretaceous granodiorite stock. The property is underlain by Hazelton, Bowser and Skeena groups sediments which have been intruded by dioritic rocks of the Bulkley Plutonic Suite.

A quartz-rich stock intrudes the Kitsuns Creek sedimentary rocks. It is tentatively identified as a Bulkley Plutonic Suite diorite, or more recently, as a Nanika Intrusion. In drill sections, it is seen to be altered to sericite-albite-clay and sericite-chlorite. Two types of breccia are seen in cores: a heterolithic 'collapse' breccia, 75 metres thick, which overlies the diorite; and some breccia pipes, approximately 20 metres, which occur within massive diorite. Quartz and quartz-carbonate veining are throughout; less common milky white to purple anhydrite veins occur with shallow dips. Mineralization in the quartz diorite is mainly disseminated pyrite in fractures and veins in some zones with an excess of 10 per cent pyrite up to 75 metres across. Local extensive gossans are developed at surface. Chalcopyrite+/-bornite+/-galena+/-sphalerite are found in quartz, quartz-carbonate and anhydrite veins (Exploration in British Columbia 1999).

By 2012, the mineralized area was called the FM zone (formerly Main zone or Zymo). It consists of a 2 by 2 kilometre area of strongly sericite-pyrite altered porphyritic dioritic feldspar porphyry which is surrounded by similarly altered sediments. Grabs of porphyry-type mineralization from across the zone has yielded copper values up to 0.92 per cent and gold to 0.48 gram per tonne, and base metal veins from the north and east side of the intrusion carry gold values to over 7 grams per tonne (Assessment Report 33546). This was the only known mineralization on the property prior to 2007.

Several prominent magnetic highs discovered in the 2004 airborne survey are found throughout the FM zone. None of these had been previously drill tested. A chip sample in an outcrop in a creek cutting one of these zones yielded 0.13 per cent copper and 0.23 gram per tonne gold over 85 metres. Drillhole ZY11-18, drilled under the above mentioned chip samples, and hole ZY11-19, were collared on separate magnetic anomalies and intersected long intervals of significant copper-gold mineralization in phyllic to argillic-altered diorite porphyry and brecciated porphyry. Purple anhydrite is common in the two 2011 FM drillholes.

In 2012, a deep vertical drillhole (ZY12-29B) in the FM zone intersected 144 metres of 0.16 per cent copper with 0.08 gram per tonne gold in and around a potassic (potassium feldspar-magnetite) zone with strong phyllic alteration above and below suggesting the FM zone may be rotated (Assessment Report 33546).

Auriferous base metal veins are known from the northeast and east parts of the FM zone, near the edges of the intrusion. The FM zone and surrounding area is anomalous in zinc, lead and antimony as well as copper and gold. The presence of the base metal veins and the zinc and lead geochemistry indicate that this area may be above the zone of mineralization.

The FM showing is a distinct mineralized area within the FM zone consisting of silicified sericite-pyrite altered intrusion adjacent to a fault contact. Pyrite content is up to two per cent; chalcopyrite and malachite are rare.

Significant calc-alkaline porphyry copper-gold mineralization has been identified in outcrops and drill cores in three areas of the Zymo property: in the Hobbes zone (103I 236), RD zone (093L 334) and FM zone (093L 324). Geochemical exploration and prospecting has identified the Urc zone (103I 242) to have potential for similar mineralization.

Prior to 2007, all of the recorded surface work in the Zymo Ridge area was carried out on the east half of the current property. The first noted discovery of mineralization in this area was by Corona Corporation in 1987 on the Calvin claim. In following up a government regional geochemical survey gold anomaly on Red Canyon Creek, they noted anomalous gold values in a quartz-sericite-pyrite altered intrusion. Small programs by the optionee during the 1990s have included stream sediment, rock and soil sampling. Porphyry-type and auriferous base metal vein mineralization was discovered over what is now referred to as the FM zone. A six-hole, 1147.65 metre drilling program was completed by Freeport Copper Company in 1999 over the FM zone, which intersected sericite-pyrite and local quartz alteration and long intervals of strongly anomalous copper values. An 823 line kilometre airborne geophysical survey was completed in December, 2004 by NDT Ventures Ltd., which covered Zymo Ridge from the southeast end to as far as the Hobbes zone (103I 236) area five kilometres west.

In 2005, Eastfield Resources acquired the property from Robin Day. In 2007, Eastfield Resources carried out a reconnaissance exploration program in late September-early October which was designed to look at known areas of mineralization to understand the geology, mineralization and alteration, and to assess the economic potential of the rest of the property. All of the remaining Zymo Ridge drainages were sampled, the existing FM area soil grids were extended to the north and west, reconnaissance soil lines were emplaced, and prospecting and reconnaissance mapping were carried out across large parts of Zymo Ridge and the road accessible areas north of Mulwain Creek. The 2007 silt sampling yielded a number of copper-gold anomalies on the Red Canyon Creek (southwest) side of Zymo Ridge, and soil sampling extended the FM zone copper-gold anomalies to the north and northwest. Prospecting and mapping identified new areas of intrusive rocks, often correlating with magnetic highs from the 2004 airborne survey. The FM zone was mapped and prospected and was found to be a large, strongly phyllic-altered intrusion with local silicified zones. The FM showing was chip sampled and assayed 0.13 per cent copper and 0.26 gram per tonne gold over 85 metres (Assessment Report 33546). A new showing, the 2Bob, was found midway between the 1999 drillholes ZY-99-01 and 05, assaying 0.92 per cent copper and 0.26 gram per tonne gold from a silicified structure containing chalcopyrite and bornite (Assessment Report 33546). Neither of these showings was tested in the Freeport drilling. A new showing, the Hobbes zone (103I 236), was discovered four kilometres west of the 1999 drilling in the follow up of a strong aeromagnetic high. Within a strong copper-gold-molybdenum soil anomaly, the Hobbes zone outcrop of silicified intrusive rock with disseminated pyrite and chalcopyrite, yielded values to 0.33 per cent copper and 1.1 grams per tonne gold (Assessment Report 33546).

In 2008, Eastfield optioned the property to Canadian Gold Hunter Corp. and a major program of soil sampling, ground geophysics, mapping, prospecting and drilling was carried out covering much of the property. A 44 kilometre geophysical survey over the Hobbes and FM zones revealed a chargeability anomaly that follows Zymo Ridge. The anomaly is up to three kilometres wide and six kilometres long and open ended to the southeast and northwest. Soil sampling confirmed the extent of the FM zone copper, gold, zinc, lead and antimony anomalies and defined the surface extent of the Hobbes zone, which contains numerous areas of anomalous copper, gold and molybdenum over a 1.5 by 1.5 kilometre area.

Prospecting and mapping at Hobbes discovered a 300 by 150 metre zone of strongly silica-magnetite-K-feldspar altered porphyritic diorite which contains strong vein and disseminated chalcopyrite, which yielded values up to 0.87 per cent copper and 1.1 grams per tonne gold (Assessment Report 33546).

Follow up of the 2007 stream sediment anomalies on Red Canyon Creek discovered two new zones of interest; the Urc (103I 242) and RD (093L 334) zones. The Urc zone is located two kilometres west of Hobbes and hosts a large area of copper-gold molybdenum in soil anomalies and silicified intrusive float samples with up to 0.31 per cent copper and 0.15 gram per tonne gold (Assessment Report 33546). Located four kilometres southwest of FM, prospecting discovered the RD zone, comprised of pyrite plus/minus sphalerite/galena/chalcopyrite veins up to 100 metres long yielding up to 17 grams per tonne gold and 568 grams per tonne silver in phyllic-altered sediments.

Six diamond-drill holes totalling 1554.47 metres, were drilled in the Hobbes zone, which intersected significant intervals of altered and mineralized intrusive rocks within hornfelsed sediments. Results included 72.0 metres of 0.72 per cent copper and 0.54 gram per tonne gold in hole ZY08-09 and 158.95 metres of 0.31 per cent copper and 0.21 gram per tonne gold in hole ZY08-10 (Assessment Report 33546).

In 2009, Canadian Gold Hunter was reorganized into NGEx Resources Inc. and a short exploration program was conducted during that year. Five holes totalling 1964.0 metres were drilled and limited soil sampling and prospecting were also carried out. Four of the five holes targeted the Hobbes zone and were successful in extending mineralization to the west and to depth. Results included 66.0 metres of 0.31 per cent copper and 0.18 gram per tonne gold in hole ZY09-15, and 79.0 metres of 0.41 per cent copper and 0.26 gram per tonne gold from hole ZY09-16 (Assessment Report 33546). Soil sampling yielded copper-gold-molybdenum anomalies in the area between the 2008 Hobbes and Urc grids.

In 2010, NGEx terminated their option on the property, and in late August-early September Eastfield Resources funded a short program of induced polarization (IP) and soil sampling over the Urc zone. Two new claims were acquired on the west side of the property and reconnaissance prospecting and silt sampling was conducted in this area. Three more claims were added after the end of field work. This program resulted in better definition of the Urc zone and the discovery of new mineralized float occurrences along the soil geochemical anomaly as well as the discovery of mineralized float one kilometre west of the Urc zone and one kilometre northwest of the Hobbes zone. The IP chargeability anomaly was also extended by 1.5 kilometres to over 7.5 kilometres in length, remaining open to the southeast.

In 2011, Eastfield Resources optioned the property to Bearing Resources Ltd. Bearing and Eastfield conducted soil sampling, ground geophysics (IP/resistivity/magnetics), mapping, prospecting and drilling over the property. The IP survey extended the known chargeability anomaly which now covers an area of 1.5 to 2.0 kilometres wide by 7.0 kilometres long and remains open to the east. Reconnaissance prospecting, soil sampling and IP/resistivity/magnetics were conducted on the south side of Red Canyon Creek and located float samples that yielded greater than 0.35 per cent copper and contained visible chalcocite, bornite and or chalcopyrite. Eleven drillholes totalling 3454.5 metres, were drilled on the Zymo project in 2011. Two holes totalling 701.5 metres were drilled on the FM zone, seven holes for 2372 metres were drilled on the Hobbes zone, and two holes totalling 381 metres were drilled on the Urc zone.

In 2012, a 7-hole (NQ size), 2322 metre drill program was completed; one 669-metre hole was drilled on the FM zone, two holes (474 metres total) drilled on the RD showing, and three holes (1152 metres total) drilled at the Hobbes zone.