Where is Bauxite found?
Bauxite
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Open the appBauxite occurs in specific geological environments. Knowing where to look, and in what kind of rock, is the difference between going home empty-handed and finding a great specimen.
Where to find Bauxite
Australia
World's largest producer, with major deposits in Weipa (Queensland), Gove (Northern Territory), and Darling Range (Western Australia).
Guinea
Possesses the world's largest bauxite reserves, particularly in the Boké and Sangarédi regions.
Brazil
Significant deposits in the Amazon region, notably Paragominas and Trombetas.
China
Major producer with deposits in Shanxi, Henan, and Guizhou provinces.
India
Extensive deposits in Odisha, Andhra Pradesh, and Gujarat.
Jamaica
Historically a major producer, with deposits formed over limestone.
Collecting tips
- Geological Maps. Consult geological maps of tropical and subtropical regions, specifically looking for areas marked as lateritic soils or bauxite deposits.
- Parent Rock Identification. Look for areas with extensive weathering of aluminum-rich igneous (e.g., syenite, basalt) or sedimentary (e.g., shale, limestone) rocks.
- Topography and Drainage. Bauxite often forms on stable, gently sloping uplands or plateaus with good drainage, allowing for prolonged leaching.
- Pisolitic Texture. Visually inspect for the characteristic pea-like or oolitic concretions within a clayey matrix, which is a strong indicator of bauxite.
- Color Variation. Observe the range of colors, from light grays and whites (higher gibbsite content) to reds and browns (higher iron oxide content).
Quick Check
- Color:
- White, gray, yellow, brown, reddish-brown, or mottled.
- Luster:
- Dull to earthy.
- Streak:
- White to reddish-brown (depending on iron content).
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