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Sanda carriere (Sanda quarry; Sanda Mine), Mindouli, Mindouli District, Pool Department, Republic of Congo (Brazzaville)

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Location is approximate, estimate based on other nearby localities.
Latitude & Longitude (WGS84): 4° South , 14° East (est.)
Margin of Error:~66km
Köppen climate type:Aw : Tropical savanna, wet

(This locality is not in the former Zaire, but rather, the "other" Congo.)

"Mindouli is a regional center on Route Nationale 1 (RN1) and the Pointe Noire-Brazzaville railway.
The copper occurrences crop out over a distance of about 3km along a limestone escarpment behind the town. They were mined by the French between 1948 and 1960.
Minerals I have personally verified that came from there, i.e. I collected them on dumps and exposed faces, dioptase, malachite, azurite, chrysocolla, libethenite, cuprite, cerussite, wulfenite, native silver, native copper, chalcocite, chalcopyrite, pyrite hematite, goethite. The copper mineralization was mined in a number of open cuts and via several shafts and declines, now collapsed. The largest open pit was called the Sanda carriere (quarry) according to my sources. A Chinese company currently has the exploration rights over the Mindouli and M'passa occurrences. They have driven several adits into the mineralization along the line of old workings and collected several thousand tonnes of metallurgical samples. Mostly massive chalcocite, malachite, cuprite mineralization. I saw practically no dioptase on dumps from these workings." (Demetrius Pohl, )

Regions containing this locality

Central Africa

Region - 532 mineral species & varietal names listed

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List

4 valid minerals. 1 (TL) - type locality of valid minerals.

List of minerals arranged by Strunz 10th Edition classification

Group 5 - Nitrates and Carbonates
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Group 9 - Silicates
'Dioptase'9.CJ.30CuSiO3 · H2O
'Plancheite' (TL)9.DB.35Cu8(Si8O22)(OH)4 · H2O

List of minerals arranged by Dana 8th Edition classification

Group 61 - CYCLOSILICATES Six-Membered Rings
Six-Membered Rings with [Si6O18] rings; possible (OH) and Al substitution
Dioptase61.1.3.1CuSiO3 · H2O
Group 66 - INOSILICATES Double-Width,Unbranched Chains,(W=2)
Amphiboles - Ca subgroup
Plancheite (TL) · H2O

List of minerals for each chemical element

H DioptaseCuSiO3 · H2O
H PlancheiteCu8(Si8O22)(OH)4 · H2O
C CerussitePbCO3
O CerussitePbCO3
O DioptaseCuSiO3 · H2O
O PlancheiteCu8(Si8O22)(OH)4 · H2O
O WulfenitePb(MoO4)
Si DioptaseCuSiO3 · H2O
Si PlancheiteCu8(Si8O22)(OH)4 · H2O
Cu DioptaseCuSiO3 · H2O
Cu PlancheiteCu8(Si8O22)(OH)4 · H2O
Mo WulfenitePb(MoO4)
Pb CerussitePbCO3
Pb WulfenitePb(MoO4)

This page contains all mineral locality references listed on This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.
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