Commodities
TertiaryManganese
Commodity typeM
Deposit
Deposit sizeN
Orebody formBLANKET
Ore controlEarly Diagenetic With Dissolved Mn Moving From Underlying Oxygen-Depleted Shales Into Oxygenated, Overlying Arenites, All Of Deltaic Origin. Low Rates Of Sedimentation Postulated For A Basin Surrounded By Low Relief Hinterland.
Materials
Ore mineralsPsilomelane
GangueCalcite, Glauconite, Hematite, Sericite
Geology
Host rockArgillite,Limestone
Associated rockGranite
StructureOpen Folds Cut By Major Faults (Trending N10w-N35w Paralllel To Fold Axes), Faulting Locally Has Steepened Dips By Up To 40. Faults In Part Controlled By Structural Trends In Basement Granites.
Tectonic settingIntracratonic Basin Within Rift Setting
AlterationSupergene Oxidation
Economic & production
Development statusOccurrence
Identification
Deposit ID10003928
MRDS IDAD00323
RegionAF
Data scoreB
Coordinates-22.69678, 27.33475
References
KEY, R.M., 1980, STRATIFORM MANGANESE MINERALIZATION IN THE PALAPYE GROUP, CENTRAL-EASTERN BOTSWANA. IN.PROC. OF THE 5TH QUAD. IAGOD SYMPOSIUM, E. SCHWEIZERBART'SCHE VERLAGSBUCHHANDLUNG, STUTTGART. P. 607-617.