| References: |
- Deposit:: DUKE, V. W. A., 1979, MANGANESE, A MINERAL COMMODITY REVIEW: INTERNAL REPORT 53, SOUTH AFRICAN MINERALS BUREAU, JOHANNESBURG, SOUTH AFRICA, 246 P. (REP4,C9)
- Deposit:: NATIONAL MATERIALS ADVISORY BOARD, 1981, MANGANESE RESERVES AND RESOURCES OF THE WORLD AND THEIR INDUSTRIAL IMPLICATIONS: NMAB-374, NATIONAL ACADEMY OF SCIENCES, WASHINGTON DC. (RR25-RR32,REP4,PC1,PC8, RR25,RR32)
- Deposit:: INDUSTRIAL MINERALS, 1978, APR., LONDON. (RR1,RR8)
- Deposit:: WEISS, S.A., 1977, MANGANESE--THE OTHER USES: METAL BULLETIN BOOKS LTD., GARDEN CITY PRESS LTD., HERTFORDSHIRE, UK. (PA1-PA4,PA8)
- Production:: PA1-PA4: RF4 PC1: RF2, P. 184
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