“Nothing else matters.” These lyrics from the renowned American heavy metal band, Metallica, don’t just echo from stadium speakers – they resonate through the rocks beneath our feet.
For Starcore International Mines’ (TSX:SAM) CEO Robert Eadie, these lyrics strike a chord that is personal and geological.
“As geologists, we live by interpreting what not everyone can see,” Eadie tells Mining.com.au.
“Every fracture, every secondary mineral, every vein is a clue – an ancient voice trapped in the rock. This is where music intertwines with science.”
For Eadie, the convergence of music and geology is no coincidence. Rather, it’s instinctual, but of course scientific.
“The lyrics of Nothing Else Matters by Metallica resonates deeply: ‘Couldn’t be much more from the heart. Forever trusting who we are. And nothing else matters’,” he says.
“We trust in our training, but even more in our instinct. We know the rock never lies; you just must keep an open mind.
“Every day in the field or the mine can bring something new: an unexpected structure, a change in alteration, a subtle sign that redefines the model.”
That mindset is what led Starcore to its discovery at the San Martin Mine in Mexico – a hydrothermal breccia with multiple brecciation stages.
A hydrothermal breccia is a type of rock composed of angular fragments. The breccia forms when hydrothermal fluids, typically hot, water-rich solutions, fracture and react with existing rocks.
The San Martin breccia features silicified dark grey limestone clasts that are gold and silver-rich with minor malachite, partzite, quartz, and calcite.
Eadie says when a breccia like this is discovered – “rich, complex, full of geological history” – everything makes sense.
“In that moment, everything else fades away. Only the certainty remains of having followed the right path. Because, in the end, nothing else matters,” he says.
Celebrating rocks and rockers
To mark World Rock Day (13 July), Mining.com.au is paying tribute to the rocks mined and the music helped to create that.
Established after the Live Aid benefit concert on 13 July 1985 – World Rock Day, known in Portuguese as Dia Mundial do Rock, commemorates the event as well as the global movement of sound.
From guitars to drum kits, the foundation of music is mined from the Earth.
As Mining.com.au previously reported, there are several types of resources derived from Earth used to build instruments and create sound, with each metal and mineral creating a different kind of sound.
Stainless steel, copper, nickel, and iron all contribute to the unique tones of modern instruments. Instruments like guitars, acoustic and electric, use various materials including stainless steel, nickel, and copper-titanium alloys to achieve its distinctive sounds.
Resonator guitars, with their loud, metallic twang, are made for blues and rock music. For reference, this would sound like British guitarist Mark Knopfler’s 2006 hit ‘Romeo and Juliet’.
And sometimes, the rocks themselves speak a language of music.
During Q2 Metals’ (TSX-V:QTWO) 2025 Canadian winter drill program, the company uncovered a heart-shaped pattern in its core sample.
Speaking to Mining.com.au, Corporate Communications Jason McBride says this rock reminds the company of the song called ‘Take Another Piece of My Heart’ by lead singer Janis Joplin, with Big Brother and the Holding Company.
For Provenance Gold’s (CSE:PAU) CEO Rauno Perttu, a similar symbolic moment happened in Oregon, US.
Perttu says when a range fire cleared away sagebrush, a rock hidden underneath revealed a whole new mineralised zone at the Eldorado Project.
“This is my favourite rock because it flagged a whole new major zone of high-grade gold mineralisation,” he says.
“This rock used to be diorite before it was shattered and hydrothermally altered by the gold-bearing fluids that created the gold system. When I see it I can’t help but hum ‘I Am a Rock’ by Simon and Garfunkel.”
Last year when Mining.com.au celebrated World Rock Day, Tempest Minerals (ASX:TEM) Managing Director Don Smith detailed his passion for music, including the surprising connection between mining and rock music.
“A guitar is the first thing you think of when you think of rock music, most acoustic guitars are either nylon (a type of plastic), which is oil and gas, or made of steel,” Smith said at the time.
“Rock guitars are usually made of steel with stainless steel as well.
“Then you can get the core of a string that is made of a different type of metal and then you can wind a different type of metal around the outside, which makes it thicker and stronger and has a different resonance.”
Whether it is Metallica’s roaring riffs or a whisper from an altered diorite deep in Oregon, rock in all its form continues to inspire, reveal, and move people. And nothing else matters.
Write to Aaliyah Rogan at Mining.com.au
Images: Starcore, Q2 Metals, Provenance & Mining.com.au
