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São Luis river alluvials, Juína, Juína kimberlite field, Mato Grosso, Brazili
Regional Level Types
São Luis river alluvialsAlluvials
Juína- not defined -
Juína kimberlite fieldPipe
Mato Grosso- not defined -
BrazilCountry

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Key
Lock Map
Latitude & Longitude (WGS84): 11° 29' 35'' South , 58° 58' 14'' West
Latitude & Longitude (decimal): -11.49306,-58.97083
GeoHash:G#: 6tynd5f8p
Locality type:Alluvials
Köppen climate type:Aw : Tropical savanna, wet
Other/historical names associated with this locality:São Luiz river


Alluvial diamonds

Regions containing this locality

South America Plate

Plate - 2,172 mineral species & varietal names listed

Amazonian Craton, South America

Craton - 396 mineral species & varietal names listed

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


6 valid minerals. 2 (TL) - type locality of valid minerals.

Detailed Mineral List:

Breyite (TL)
Formula: Ca3Si3O9
Type Locality:
Reference: Brenker, F., Nestola, F., Brenker, L., Peruzzo, L., Secco, L. and Harris, J.W. (2018) Breyite, IMA 2018-062. CNMNC Newsletter No. 45, October 2018: page xxx; Mineralogical Magazine: 82: xxx-xxx; http://forum.amiminerals.it/viewtopic.php?f=5&t=14984
Calcite
Formula: CaCO3
Reference: D. A. Zedgenizov, A. Shatskiy, A. L. Ragozin, H. Kagi and V. S. Shatsky (2014): Merwinite in diamond from São Luiz, Brazil: A new mineral of the Ca-rich mantle environment. American Mineralogist 99, 547-550.
Diamond
Formula: C
Reference: D. A. Zedgenizov, A. Shatskiy, A. L. Ragozin, H. Kagi and V. S. Shatsky (2014): Merwinite in diamond from São Luiz, Brazil: A new mineral of the Ca-rich mantle environment. American Mineralogist 99, 547-550.
Forsterite
Formula: Mg2SiO4
Reference: D. A. Zedgenizov, A. Shatskiy, A. L. Ragozin, H. Kagi and V. S. Shatsky (2014): Merwinite in diamond from São Luiz, Brazil: A new mineral of the Ca-rich mantle environment. American Mineralogist 99, 547-550.
Jeffbenite (TL)
Formula: Mg3Al2Si3O12
Type Locality:
Reference: Nestola, F., Burnham, A., Peruzzo, L., Tauro, L., Alvaro, M., Walter, M.J. and Gunter, M. (2015) Jeffbenite, IMA 2014-097. CNMNC Newsletter No. 24, April 2015, page 250; Mineralogical Magazine, 79, 247-251; Nestola, F., Burnham, A.D., Peruzzo, L., Tauro, L., Alvaro, M., Walter, M.J., Gunter, M., Kohn, S.C. (2016): Tetragonal Almandine-Pyrope Phase, TAPP: finally a name for it, the new mineral jeffbenite. Mineralogical Magazine, 80, 1219-1232
Merwinite
Formula: Ca3Mg(SiO4)2
Reference: D. A. Zedgenizov, A. Shatskiy, A. L. Ragozin, H. Kagi and V. S. Shatsky (2014): Merwinite in diamond from São Luiz, Brazil: A new mineral of the Ca-rich mantle environment. American Mineralogist 99, 547-550.
'Unnamed (Ca Silicate)'
Formula: Ca3(Si3O9)
Description: May be walstromite or perovskite.
Reference: D. A. Zedgenizov, A. Shatskiy, A. L. Ragozin, H. Kagi and V. S. Shatsky (2014): Merwinite in diamond from São Luiz, Brazil: A new mineral of the Ca-rich mantle environment. American Mineralogist 99, 547-550.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
'Diamond'1.CB.10aC
Group 5 - Nitrates and Carbonates
'Calcite'5.AB.05CaCO3
Group 9 - Silicates
'Forsterite'9.AC.05Mg2SiO4
'Merwinite'9.AD.15Ca3Mg(SiO4)2
Unclassified Minerals, Rocks, etc.
'Breyite' (TL)-Ca3Si3O9
'Jeffbenite' (TL)-Mg3Al2Si3O12
'Unnamed (Ca Silicate)'-Ca3(Si3O9)

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Semi-metals and non-metals
Diamond1.3.6.1C
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with all cations in octahedral [6] coordination
Forsterite51.3.1.2Mg2SiO4
Insular SiO4 Groups Only with cations in [6] and >[6] coordination
Merwinite51.4.2.1Ca3Mg(SiO4)2
Unclassified Minerals, Rocks, etc.
Breyite (TL)-Ca3Si3O9
Jeffbenite (TL)-Mg3Al2Si3O12
'Unnamed (Ca Silicate)'-Ca3(Si3O9)

List of minerals for each chemical element

CCarbon
C CalciteCaCO3
C DiamondC
OOxygen
O BreyiteCa3Si3O9
O CalciteCaCO3
O ForsteriteMg2SiO4
O JeffbeniteMg3Al2Si3O12
O MerwiniteCa3Mg(SiO4)2
O Unnamed (Ca Silicate)Ca3(Si3O9)
MgMagnesium
Mg ForsteriteMg2SiO4
Mg JeffbeniteMg3Al2Si3O12
Mg MerwiniteCa3Mg(SiO4)2
AlAluminium
Al JeffbeniteMg3Al2Si3O12
SiSilicon
Si BreyiteCa3Si3O9
Si ForsteriteMg2SiO4
Si JeffbeniteMg3Al2Si3O12
Si MerwiniteCa3Mg(SiO4)2
Si Unnamed (Ca Silicate)Ca3(Si3O9)
CaCalcium
Ca BreyiteCa3Si3O9
Ca CalciteCaCO3
Ca MerwiniteCa3Mg(SiO4)2
Ca Unnamed (Ca Silicate)Ca3(Si3O9)

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Pennsylvanian
298.9 - 323.2 Ma



ID: 2292082
Fazenda da Casa Branca Formação

Age: Pennsylvanian (298.9 - 323.2 Ma)

Stratigraphic Name: Fazenda da Casa Branca Formation

Lithology: Mudstone, arkose, conglomerate, shale, sandstone

Reference: Geological Survey of Brazil. State Geological Maps of Brazil. CPRM - Geobank. [43]

Calymmian - Statherian
1400 - 1800 Ma



ID: 3185026
Paleoproterozoic-Mesoproterozoic crystalline metamorphic rocks

Age: Proterozoic (1400 - 1800 Ma)

Lithology: Medium-high grade unclassified metamorphic rock

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
D. A. Zedgenizov, A. Shatskiy, A. L. Ragozin, H. Kagi and V. S. Shatsky (2014): Merwinite in diamond from São Luiz, Brazil: A new mineral of the Ca-rich mantle environment. American Mineralogist 99, 547-550.
Nestola, F., Burnham, A.D., Peruzzo, L., Tauro, L., Alvaro, M., Walter, M.J., Gunter, M., Kohn, S.C. (2016): Tetragonal Almandine-Pyrope Phase, TAPP: finally a name for it, the new mineral jeffbenite. Mineralogical Magazine, 80, 1219-.1232.


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