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Scientists Reveal Fungus Capable of Transforming Minerals into Gold and Technique Can Be Replicated at Home, Without the Use of Chemical Products or Traditional Mining.
Researchers from the Commonwealth Scientific and Industrial Research Organisation (CSIRO) in Australia announced the discovery of a biological method capable of producing pure gold from a common fungus found in agricultural soils.
The study, released in 2024, reveals that Fusarium oxysporum, an organism known for attacking plants such as tomatoes and bananas, can be used to precipitate gold particles from minerals.
The technique has the potential to revolutionize mining, with possibilities for application even in home environments.
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Fungus Transforms Minerals into Gold
The scientific investigation showed that this fungus acts enzymatically, modifying mineral compounds and reducing gold metal ions until they deposit on its surface.
The process, classified as part of the biogeochemical cycle of gold, suggests that living organisms actively contribute to the natural formation of metallic deposits, something that had previously been little explored on a practical scale.
According to researchers, Fusarium oxysporum acts in well-defined stages: upon contact with minerals that contain gold, the fungus releases enzymes capable of altering the chemical structure of the compounds.
These compounds, in turn, have their gold ions reduced, resulting in the formation of metallic nanoparticles visible under a microscope.
The method occurs at room temperature and does not require the application of heat, pressure, or aggressive chemical reagents.
Metabolic Mining and Environmental Impact
Experts classify the technique as belonging to the field of metabolic mining, an emerging area of biotechnology that seeks to exploit the natural ability of microorganisms to extract valuable metals in a clean manner.
Unlike traditional mining, which uses explosives, excavators, and highly toxic products such as cyanide and mercury, the use of fungi eliminates severe environmental impact and drastically reduces the waste generated.
Domestic Cultivation of the Fungus is Viable
Another aspect highlighted by the CSIRO team was the possibility of domestic cultivation of the fungus.
In controlled environments with access to substrates containing minerals with traces of gold, it is theoretically possible to replicate the metal precipitation process on a small scale.
This includes creating fungal colonies in laboratories, without the need for large structures or investments.
The ease of cultivation occurs because Fusarium oxysporum is a rapidly proliferating organism, adaptable to various types of soil and climates.
Its presence is already common in plantations, although it is generally treated as a pest.
When manipulated under specific conditions, this same fungus becomes a biotechnological tool with high potential for scientific and industrial application.
Fungi and the Formation of Natural Deposits
The research also indicates that fungi from the same group are more common in regions with high concentrations of gold, suggesting an ecological role that has been neglected until now.
There are indications that these microorganisms naturally participate in the formation of gold deposits, interacting with rocks and soils rich in minerals over millions of years.
In practice, the procedure begins with the collection of minerals containing gold, which are then exposed to the fungus in suitable cultivation media.
Fusarium oxysporum comes into action releasing substances that act directly on the gold compounds, promoting the chemical transformation of the ions and the deposition of the metal in its solid form.
The efficiency of the process is still in the testing phase, but it already shows visible results in the laboratory.
Applications in Remote Places and in Space
In addition to the environmental advantages, the study opens up possibilities for applications in remote or hard-to-access locations, where conventional mining would be unfeasible.
The model is also compatible with small-scale mining systems aimed at local communities or educational projects, without the need for heavy infrastructure.
The technique has attracted the attention of space agencies, after tests demonstrated that the fungus can also process meteorite dust.
This expands possibilities for its use in future space missions focused on asteroid mining, which contain significant amounts of precious metals.
Scientists believe that the use of microorganisms like Fusarium oxysporum could be strategic for resource exploration beyond Earth, especially in environments where traditional mechanical and chemical methods are impractical.
Genetic Engineering Can Enhance the Process
The viability of adapting the fungus to different types of substrates and environments is also being studied.
Research in genetic engineering aims to increase the productivity of the process, improving specific enzymes and better controlling the organism’s response to different chemical and physical conditions.
The goal is to develop optimized strains, with a higher gold conversion rate and resistance to variations in temperature, humidity, and acidity.
With the advancement of this research, interest from industries in transforming microorganisms into decentralized metal production units is growing.
The concept of “living factories” is beginning to gain traction at international conferences and already motivates startups to develop prototypes for practical exploration of the technique.
In parallel, there is a mobilization among researchers to establish ethical and environmental guidelines on the commercial use of biomining.
The proposal to produce gold with fungi, without environmental impact, without destruction of ecosystems, and with the potential for cultivation anywhere on the planet — or even beyond — represents a remarkable advancement.
But in light of this unprecedented possibility, a question arises:
Are we prepared for an era where gold could be cultivated in our backyard?
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