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Biogenesis of the Rennell bauxite

G. Taylor and Geraint W. Hughes
Biogenesis of the Rennell bauxite
Economic Geology and the Bulletin of the Society of Economic Geologists (May 1975) 70 (3): 542-546


Pyrite-rich clay sediments from a brackish-water lake on Rennell Island provide new evidence for bauxite genesis. The sediment represents an intermediate product and is considered to have been produced by biogenic activity in a shallow-water environment. Several sources of possible parent material are considered, and it is concluded that the bauxite deposit of northwest Rennell is derived from volcanic ash of hornblende andesite composition erupted from Pliocene to Recent volcanic centers. The diameters of residual ilmenite grains common to both the bauxite and the lake sediment are suggestive of a volcanic source some 200 km distant.

ISSN: 0361-0128
EISSN: 1554-0774
Serial Title: Economic Geology and the Bulletin of the Society of Economic Geologists
Serial Volume: 70
Serial Issue: 3
Title: Biogenesis of the Rennell bauxite
Affiliation: Dep. Geol. Surv., Honiara, Solomon Islands
Pages: 542-546
Published: 197505
Text Language: English
Publisher: Economic Geology Publishing Company, Lancaster, PA, United States
Accession Number: 1976-003085
Categories: Economic geology of ore deposits
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: tables, sketch map
S23°00'00" - S05°00'00", W171°00'00" - E155°00'00"
Secondary Affiliation: Univ. New England,
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, Copyright, Society of Economic Geologists
Update Code: 1976
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