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Morro dos Seis Lagos, São Gabriel da Cachoeira, Amazonas, Brazili
| Regional Level Types | |
|---|---|
| Morro dos Seis Lagos | Complex |
| São Gabriel da Cachoeira | Municipality |
| Amazonas | State |
| Brazil | Country |
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Latitude & Longitude (WGS84):
0° 16' 54'' North , 66° 40' 49'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Cretaceous Nb-REE deposit, consisting of three weathered alkaline carbonatitic pipes with laterite covers averaging 230 m in depth. The pipes form three laterite-covered hills in the area.
In Domain 1, it has been estimated between 10.5-28.3 Mt @ 2.97 wt% Nb2O5 and 0.71 wt% REE2O3, and in Domain 2, between 1.40-3.78 Bt @ 1.17 wt% Nb2O5 and 0.46 wt% REE2O3. High grades of Ti, Sn and W were also detected for the lateritic crust. It is estimated that sediments in the Esperança Basin contain 11.8 Mt @ 1.76 wt% REE2O3 and 2.36 wt% P2O5, whereas the siderite carbonatite shows high grades of Nb, REE, Sc and Zn, further increasing the area’s mineral potential.
The surficial expression of this complex is given by three semicircular features that stand out as hills in the region’s generally flat landscape. These hills are named Morro dos Seis Lagos (MSL); Morro do Meio (MM) and Morro do Norte (MN). MSL contains a Nb deposit hosted in a lateritic crust with a thickness of more than 250 m developed over a siderite carbonatite
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
17 valid minerals.
Rock Types Recorded
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Goethite | 4.00. | Fe3+O(OH) |
| ⓘ | 'Pyrochlore Group' | 4.00. | A2Nb2(O,OH)6Z |
| ⓘ | Hematite | 4.CB.05 | Fe2O3 |
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| ⓘ | Rutile | 4.DB.05 | TiO2 |
| ⓘ | var. Niobium-bearing Rutile | 4.DB.05 | (Ti,Nb)O2 |
| ⓘ | Brookite | 4.DD.10 | TiO2 |
| ⓘ | Hollandite | 4.DK.05a | Ba(Mn4+6Mn3+2)O16 |
| ⓘ | Cerianite-(Ce) | 4.DL.05 | (Ce4+,Th)O2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Siderite | 5.AB.05 | FeCO3 |
| ⓘ | Ankerite | 5.AB.10 | Ca(Fe2+,Mg)(CO3)2 |
| ⓘ | Dolomite | 5.AB.10 | CaMg(CO3)2 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Baryte | 7.AD.35 | BaSO4 |
| ⓘ | Jarosite | 7.BC.10 | KFe3+3(SO4)2(OH)6 |
| Group 8 - Phosphates, Arsenates and Vanadates | |||
| ⓘ | Crandallite | 8.BL.10 | CaAl3(PO4)(PO3OH)(OH)6 |
| ⓘ | Gorceixite | 8.BL.10 | BaAl3(PO4)(PO3OH)(OH)6 |
| ⓘ | Florencite-(Ce) | 8.BL.13 | CeAl3(PO4)2(OH)6 |
| Group 9 - Silicates | |||
| ⓘ | Kaolinite | 9.ED.05 | Al2(Si2O5)(OH)4 |
| Unclassified | |||
| ⓘ | 'Bastnäsite' | - | (Ce/Nd/Y/REE)(CO3)F |
| ⓘ | 'Limonite' | - | |
| ⓘ | 'Monazite Group' | - | REE(PO4) |
| ⓘ | 'Florencite' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Crandallite | CaAl3(PO4)(PO3OH)(OH)6 |
| H | ⓘ Florencite-(Ce) | CeAl3(PO4)2(OH)6 |
| H | ⓘ Goethite | Fe3+O(OH) |
| H | ⓘ Gorceixite | BaAl3(PO4)(PO3OH)(OH)6 |
| H | ⓘ Jarosite | KFe33+(SO4)2(OH)6 |
| H | ⓘ Kaolinite | Al2(Si2O5)(OH)4 |
| H | ⓘ Pyrochlore Group | A2Nb2(O,OH)6Z |
| C | Carbon | |
| C | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| C | ⓘ Bastnäsite | (Ce/Nd/Y/REE)(CO3)F |
| C | ⓘ Dolomite | CaMg(CO3)2 |
| C | ⓘ Siderite | FeCO3 |
| O | Oxygen | |
| O | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| O | ⓘ Baryte | BaSO4 |
| O | ⓘ Bastnäsite | (Ce/Nd/Y/REE)(CO3)F |
| O | ⓘ Brookite | TiO2 |
| O | ⓘ Cerianite-(Ce) | (Ce4+,Th)O2 |
| O | ⓘ Crandallite | CaAl3(PO4)(PO3OH)(OH)6 |
| O | ⓘ Dolomite | CaMg(CO3)2 |
| O | ⓘ Florencite-(Ce) | CeAl3(PO4)2(OH)6 |
| O | ⓘ Goethite | Fe3+O(OH) |
| O | ⓘ Gorceixite | BaAl3(PO4)(PO3OH)(OH)6 |
| O | ⓘ Hematite | Fe2O3 |
| O | ⓘ Hollandite | Ba(Mn64+Mn23+)O16 |
| O | ⓘ Jarosite | KFe33+(SO4)2(OH)6 |
| O | ⓘ Kaolinite | Al2(Si2O5)(OH)4 |
| O | ⓘ Monazite Group | REE(PO4) |
| O | ⓘ Pyrochlore Group | A2Nb2(O,OH)6Z |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Rutile | TiO2 |
| O | ⓘ Siderite | FeCO3 |
| O | ⓘ Rutile var. Niobium-bearing Rutile | (Ti,Nb)O2 |
| F | Fluorine | |
| F | ⓘ Bastnäsite | (Ce/Nd/Y/REE)(CO3)F |
| Mg | Magnesium | |
| Mg | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| Mg | ⓘ Dolomite | CaMg(CO3)2 |
| Al | Aluminium | |
| Al | ⓘ Crandallite | CaAl3(PO4)(PO3OH)(OH)6 |
| Al | ⓘ Florencite-(Ce) | CeAl3(PO4)2(OH)6 |
| Al | ⓘ Gorceixite | BaAl3(PO4)(PO3OH)(OH)6 |
| Al | ⓘ Kaolinite | Al2(Si2O5)(OH)4 |
| Si | Silicon | |
| Si | ⓘ Kaolinite | Al2(Si2O5)(OH)4 |
| Si | ⓘ Quartz | SiO2 |
| P | Phosphorus | |
| P | ⓘ Crandallite | CaAl3(PO4)(PO3OH)(OH)6 |
| P | ⓘ Florencite-(Ce) | CeAl3(PO4)2(OH)6 |
| P | ⓘ Gorceixite | BaAl3(PO4)(PO3OH)(OH)6 |
| P | ⓘ Monazite Group | REE(PO4) |
| S | Sulfur | |
| S | ⓘ Baryte | BaSO4 |
| S | ⓘ Jarosite | KFe33+(SO4)2(OH)6 |
| S | ⓘ Pyrite | FeS2 |
| K | Potassium | |
| K | ⓘ Jarosite | KFe33+(SO4)2(OH)6 |
| Ca | Calcium | |
| Ca | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| Ca | ⓘ Crandallite | CaAl3(PO4)(PO3OH)(OH)6 |
| Ca | ⓘ Dolomite | CaMg(CO3)2 |
| Ti | Titanium | |
| Ti | ⓘ Brookite | TiO2 |
| Ti | ⓘ Rutile | TiO2 |
| Ti | ⓘ Rutile var. Niobium-bearing Rutile | (Ti,Nb)O2 |
| Mn | Manganese | |
| Mn | ⓘ Hollandite | Ba(Mn64+Mn23+)O16 |
| Fe | Iron | |
| Fe | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| Fe | ⓘ Goethite | Fe3+O(OH) |
| Fe | ⓘ Hematite | Fe2O3 |
| Fe | ⓘ Jarosite | KFe33+(SO4)2(OH)6 |
| Fe | ⓘ Pyrite | FeS2 |
| Fe | ⓘ Siderite | FeCO3 |
| Y | Yttrium | |
| Y | ⓘ Bastnäsite | (Ce/Nd/Y/REE)(CO3)F |
| Nb | Niobium | |
| Nb | ⓘ Pyrochlore Group | A2Nb2(O,OH)6Z |
| Nb | ⓘ Rutile var. Niobium-bearing Rutile | (Ti,Nb)O2 |
| Ba | Barium | |
| Ba | ⓘ Baryte | BaSO4 |
| Ba | ⓘ Gorceixite | BaAl3(PO4)(PO3OH)(OH)6 |
| Ba | ⓘ Hollandite | Ba(Mn64+Mn23+)O16 |
| Ce | Cerium | |
| Ce | ⓘ Bastnäsite | (Ce/Nd/Y/REE)(CO3)F |
| Ce | ⓘ Cerianite-(Ce) | (Ce4+,Th)O2 |
| Ce | ⓘ Florencite-(Ce) | CeAl3(PO4)2(OH)6 |
| Nd | Neodymium | |
| Nd | ⓘ Bastnäsite | (Ce/Nd/Y/REE)(CO3)F |
| Th | Thorium | |
| Th | ⓘ Cerianite-(Ce) | (Ce4+,Th)O2 |
Other Regions, Features and Areas containing this locality
South AmericaContinent
South America PlateTectonic Plate
- Amazonian CratonCraton
- Guyana ShieldShield
- Ventuari-Tapajos BeltVolcanic Arc
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References
Orris, Greta J., Grauch, Richard I. (2002) Rare Earth Element Mines, Deposits, and Occurrences. Open-File Report 2002-189. US Geological Survey doi:10.3133/ofr02189
Berger, Vladimir I.; Singer, Donald A.; Orris, Greta J. (2009) Carbonatites of the World, Explored Deposits of Nb and REE—Database and Grade and Tonnage Models . Open-File Report 2009-1139. US Geological Survey doi:10.3133/ofr20091139
[1]Bento, João Pedro Proença, Porto, Claudio Gerheim, Takehara, Lucy, Silva, Francisco José da, Bastos Neto, Artur Cezar, Machado, Matheus Lamas, Duarte, Ana Carolina (2022) Mineral potential re-evaluation of the Seis Lagos Carbonatite Complex. Amazon. Brazil. Brazilian Journal of Geology, 52 (1) doi:10.1590/2317-4889202120210031
Morro dos Seis Lagos, São Gabriel da Cachoeira, Amazonas, Brazil