🧪 Study Shows Gold Can Form Even in Ultra-Dilute Water Conditions
New research from China has directly observed gold forming and concentrating from extremely dilute solutions — as low as 10 parts per billion in water — thanks to a dense liquid layer that forms on pyrite surfaces, challenging traditional theories on how gold deposits form.
Key Facts:
• Scientists watched gold precipitate on pyrite crystals within minutes during experiments with water containing very tiny amounts of dissolved gold.
• The study reveals a microscopic process where pyrite attracts and concentrates gold over time, even under common environmental conditions.
• This reshapes understanding of gold deposit formation, showing deposits can accumulate gradually from sparse sources over geological time.
Expert Insight:
Researchers say the discovery broadens how geologists think about ore genesis — gold doesn’t always need extreme heat or deep fluid systems to concentrate; microscopic surface chemistry can drive accumulation too.
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