Driven By Discovery
Queensland Critical Minerals Limited
Queensland Critical Minerals Limited
Driving the Transition to a Sustainable Future with Innovative Exploration and Development Strategies
Queensland Critical Minerals Limited
Pioneering Sustainable Exploration and Development for a Cleaner Future
Queensland Critical Minerals Limited
Exploring and developing the critical minerals of tomorrow for a sustainable future today

Queensland Critical Minerals Limited (QCM) is an Australian-based critical minerals exploration company

QCM's approach to critical minerals exploration combines cutting-edge technology, strategic partnerships, geographic advantages, and a motivated team.

Projects
Historical Mines
Square Kilometres To Explore
Meters Drilled

Our Assets

Silverwood Project

  • Possible copper VMS-style deposits 
  • No modern exploration 
  • No gold assays in the previous drilling
  • Numerous small-scale historic mines and known mineral occurrences.

Silverwood

...

Graymare Gold Project 

  • A huge area of unexplained gold mineralisation
  • Fosterville analogies
  • Only 2 known drill holes in the whole project area
  • Over 60 historical mines &100 linear kilometres of alluvial
...

Warroo Copper-Gold Project

  • Open pit gold deposit mined in the 1980s
  • Poorly understood geology and mineralisation 
  • Very little modern exploration, but some high-grade intercepts 
  • Never explored for Copper, despite
...
Queensland Critical Minerals Limited (QCM) is currently in negotiations for a cornerstone agreement with a high-calibre drilling company. This agreement will provide QCM with more options for drilling invoices and assist in the rapid drilling on QCM projects. The cornerstone agreement represents a unique opportunity for QCM to leverage its assets and expertise to expand its exploration and development activities.
Work starts on our projects
Work has stated on our projects! QCML is committed to keeping its stakeholders informed about any significant developments or news related to its projects, and any announcements made by the company will be communicated through official channels. It is advisable for interested parties to regularly check QCML's official website or social media channels to stay updated on any project news.
News
News
Governments and companies around the world are taking steps to ensure that their critical minerals supply chains are secure, with a focus on environmental and social responsibility.
News

Silverwood Project

  • Possible copper VMS-style deposits 
  • No modern exploration 
  • No gold assays in the previous drilling
  • Numerous small-scale historic mines and known mineral occurrences.

Silverwood Project is located 15km South of Warwick in Queensland and has 234km2 of tenure. Situated in the Calliope Island Arc which hosts the Mount Morgan gold mine (+8Moz), Silverwood comprises numerous small-scale historic mines and numerous known mineral occurrences.

Regional Geology

(source GSQ report by Siemon & Huber 1979)

The oldest rocks in the area are the Silurian to Early Devonian Silverwood Group comprising the basal Riadon Stud Formation, the Connolly Volcanics and the Rosenthal Creek Formation (Figure 16).  Mineralisation is confined to the upper units.  Unconformably overlying the Silverwood Group are the Early Permian Rhyolite Range Beds and the Early Jurassic Marburg Formation.  Intruding the sequence to the west is the Herries Adamellite and to the southeast the Stanthorpe Adamellite both of Early Triassic age.  Dykes of andesitic, dacitic and rhyolitic composition intrude the sequence, which has undergone low grade metamorphism with little deformation. 

The Connolly Volcanics is a succession of andesitic and dacitic flows and tuffs. sediments and biohermal limestone.  Detritus in the sediments consists of reworked volcanics and sediments, limestone of Ordovician and Devonian age and granite.  Sediments including limestone, and volcanics of the Rosenthal Creek Formation conformably overlie the Connolly Volcanics.  The succession is typical of an island arc environment with waning volcanism.

The Silverwood copper mine workings were first developed in 1917 and in 1923, ore was sent to Mount Morgan for processing.  In 1966, the Stanthorpe Mining Company began mining the lodes and the mine was active until 1970 (Siemon and Huber 1979).  Production is thought to have been about 42.5 tonnes of copper. 

Mineralisation

Sulphide mineralisation in the southern Silverwood Valley is restricted to the Connolly Volcanics, and the Rosenthal Creek Formation where the principal occurrences are at Grieves Quarry and the Silverwood Copper mine.

Prospecting of a copper occurrence near Silverwood siding commenced about 1970.  The Silverwood copper mine (Figure 16) includes the Day Dawn and Wilson’s Lodes with copper mineralisation occurring as chalcopyrite mainly in a highly siliceous brecciated zone, 0.3m to 1m wide.  The workings are located along the contact between the andesitic pyroclastics (Connolly Volcanics) and the sediments of the Rosenthal Creek Formation.  Barren dyke intrusions appear to have remobilised earlier formed sulphides into favourable structural sites, with the dykes themselves containing only minor pyrite.  Historical Ore Reserves were estimated at some 10, 000 tons, but H&SC is unable to report this as it is well before the establishment of the JORC Code.  A treatment plant to produce copper concentrates was erected 5.6 km south of Warwick in 1969 and was later used for crushing limestone from Grieves Quarry which began in 1971.  Limestone is reported to have been produced from the Silverwood area between 1962 and 1965, but the sites of production are unknown. 

The Myrtle Copper deposit is a small prospect of scattered pits and small dumps, to the south of Silverwood Copper Mine, and occurs in the same stratigraphic position.

The Grieves Quarry deposit is a stratabound copper-lead-zinc-silver deposit hosted in the Early Devonian sequence i.e. the Connolly Volcanics, comprising of interbedded tuffs and sediments with massive reef limestone, overlain by siltstone, mudstone and minor tuff.  The tuffs and sediments were deposited in an off-reef environment in an island arc system with a cratonic hinterland of granitic, volcanic and sedimentary rocks.  Crosscutting the sequence are at least two phases of dykes of the Devonian to Triassic age.  All rock types have undergone low-grade metamorphism

 

Previous Exploration

The first real modern exploration in the Silverwood Valley was carried out by the Geological Survey of Queensland (“GSQ”) between 1967 and 1971 where two diamond drilling programmes were undertaken at the Grieves Quarry for a total of 17 diamond holes with 1,505 metres drilled. The GSQ diamond drilling intercepted numerous significant intersections of massive sulphide mineralisation at the Grieves Quarry and the best intercepts are shown in Table 5.  The GSQ did not assay for gold, focussing on base metals copper, zinc, lead and silver.

Amoco Minerals Australia Pty Limited (1974) and Penzoil of Australia Ltd, (1978) were the earliest to explore for massive base-metal sulphides.  Programs included geological mapping, airborne electromagnetic surveys, ground induced polarization, magnetic and geochemical sampling surveys, but no drilling.

In the 1980s, Ashton Mining Limited (1980-1982), CRA Exploration Pty Limited (1986-1987), Australian Gold Resources Ltd (1988) and Stevenson Enterprises Pty Ltd (1989) examined the area with a gold-in-massive sulphide target in mind; there was limited fieldwork and no drilling.

The most recent work is recorded by Metallica Minerals Limited (“Metallica”) (2000-2002), Icon Resources Ltd (2008-2009) and Invictus Gold Ltd, (2013), all of which carried out reviews but limited fieldwork.  Limestone quarrying was considered by Metallica.

 

Grieves Quarry Base Metal Deposit

At Grieves Quarry, base metal mineralisation has been located in three zones over a length of 150m and to a depth of at least 130m.  The stratabound mineralisation is hosted in both a lens of bioclastic reef limestone and in more widely distributed tuffaceous sediments (Figure 17).  There is some suggestion of a transgressive nature to the mineralisation at the limestone/tuffaceous sediment contact.  The exposed host units have a relatively steep dip to the east before shallowing to a 20-30o dip east some 50 to 80m below surface. 

Pyrite is ubiquitous in the area and, in parts of the deposit, has been converted to pyrrhotite.  In massive sulphide zones associated with the upper parts of the limestone lens, sphalerite, chalcopyrite and galena are subordinate to pyrite and pyrrhotite in a matrix of calcite and chlorite. 

Stockworks that form the lateral parts of the massive sulphide zones contain sphalerite, chalcopyrite and galena with minor iron sulphides with chlorite and calcite as gangue.  Similar stockworks with only minor galena overlie the massive sulphide mineralisation but are separated from it by a barren tuffaceous horizon.  Chalcopyrite is usually present as discrete grains associated with pyrrhotite.

The dominance of chlorite in the sulphide zones can be explained by an intermediate to basic volcanic source rather than an acidic volcanic source.  The presence of calcite is attributed to recrystallisation of limestone material which in turn may suggest dissolution and brecciation associated with hydrothermal fluids.  There is no mention of any high temperature calcsilicate minerals suggesting that there is no whole scale metasomatic replacement and the mineralisation may well be related to exhalite processes or even Mississippi Valley-type (MVT) mineralisation.

 

Queensland Critical Minerals Limited (QCM) is a company focused on exploring and developing critical mineral resources in Australia. The company is actively exploring for copper, lithium, manganese, graphite, zinc, and gold. These minerals have a wide range of uses, from powering electric vehicles and mobile devices to strengthening steel and manufacturing batteries.

Lithium
Lithium is considered a critical mineral due to its significance in the manufacturing of lithium-ion batteries, which are a crucial component in electric vehicles and energy storage systems. It is also used in other applications, including glass and ceramics, pharmaceuticals, and aerospace. Given its importance in the transition to renewable energy and the electrification of transportation, there is a need to secure a dependable supply of lithium to ensure sustainable economic growth.
Copper
Copper is widely regarded as a critical mineral because of its importance in modern society, particularly in the development of electrical infrastructure and the transition to renewable energy. It is a key component of electric vehicles, wind turbines, solar panels, and energy storage systems. Copper is also used in a variety of other applications, including construction, transportation, and telecommunications. Given its essential role in numerous industries and technologies, the reliable supply of copper is crucial for achieving sustainable economic growth.
Manganese
Manganese is considered a critical mineral due to its importance in modern technologies, particularly in steel production and the manufacturing of batteries. It is also used in a variety of other applications, including agriculture, water treatment, and electronics. Given its significance to a range of industries, there is a need to secure a reliable supply chain of manganese to ensure sustainable economic growth.
Graphite
Graphite is regarded as a critical mineral due to its importance in modern technologies, particularly in the manufacturing of lithium-ion batteries and other energy storage systems. It is also used in other applications, including the production of steel, lubricants, and electronics. Given its critical role in various industries, the reliable supply of graphite is crucial for sustainable economic growth.
Zinc
Zinc is considered a critical mineral due to its significance in a range of industries, including construction, transportation, and manufacturing. It is used in the production of galvanized steel, which is widely used in the construction of buildings, bridges, and other infrastructure. Zinc is also used in the manufacturing of automotive parts, electrical equipment, and household appliances. Given its essential role in various industries, the reliable supply of zinc is crucial for achieving sustainable economic growth.
Gold
While gold is not typically regarded as a critical mineral, gold is essential to modern technologies, such as electronics and its unique properties make it an essential material in a variety of applications. Some experts argue that it should be considered as such due to its importance in financial systems and as a reserve currency.
Robert Friedland
“In the short term, we’ve had a big rise in the price of copper, But for the medium term, copper has really become a national security issue. It’s central for what we want to do with our economy.”
Minister for Trade and Tourism, Don Farrell
Australia is uniquely positioned to meet global demand for critical minerals that underpin the transition to net zero. We are a trusted and reliable partner in diversifying critical minerals supply chains globally.
Minister for Resources, Madeleine King
“The Australian resources industry will be essential for the world to reach net zero, and Australia’s endowment of critical minerals will help to meet global demand for the minerals essential to clean energy technology."
USGS
Geoscience Australia, the Geological Survey of Canada, and the USGS are coordinating their critical mineral mapping and research efforts to create a shared foundation of mineral information to help ensure a safe and secure supply of the materials needed for each country’s economy and security.
Peter Cunningham, Rio Tinto’s chief financial officer
“I certainly think we are fully aligned with that view that the world needs more materials, and we’re upping our game against that, and at the right time,”
Jamie Maddock, Analyst at U.K. wealth-management firm Quilter Cheviot.
Miners and investors are cognizant of the widening supply shortfall in several key energy transition-oriented commodities