ROCKHOUNDING GRAY AREA DOCUMENTED
Where: West Kalimantan · Asia · approx. 0.38, 109.97 (vicinity only)
Why this spot: Alluvial diamond gravels of the Landak drainage worked by Dayak and Malay panners since at least the 17th century
What turns up: small diamonds, gold, zircon, corundum
Access: Gray area.
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