Mineral Evolution Database

Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.

Mineral locality data provided by mindat.org

The Mineral Evolution database is currently under development.

The goal of this page is to present localities at which the mineral is found, and estimates of the oldest possible geologic age of the minerals at these localities.

Locality Name:
Barrocas, Bahia, Brazil

Oldest recorded age at locality: 2132
Youngest recorded age at locality: 2016

mindat Locality ID: 210261
mindat URL: http://www.mindat.org/loc-210261.html

Tectonic Settings:

Total number of sublocalities beneath "Barrocas, Bahia, Brazil": 2
Total number of bottom-level sublocalities: 2

Number of Child Localities: 2
Child Localities:
Fazenda Brasileiro Mine
Fazenda Canto Au Deposit

Latitude: 11°27'8"S
Longitude: 39°4'35"W
Decimal Degree (lat, lon): -11.452222222222,-39.076388888889

A	This mineral is Anthropogenic.
G	This mineral is directly dated.
B	This mineral is reported as having this age.
Y	This mineral is using an age reported as an element mineralization period.
O	This mineral is using an age calculated from all data at the locality.
R	The age displayed for this mineral originates from a different, non-child locality.
P	The age displayed for this mineral is the range of ages for this mineral at all of this locality's children.
	This mineral's age has not yet been recorded.

Arsenopyrite	Calcite	Chalcopyrite	Clay	Copper	Corundum	Covellite	Digenite	Feldspar	Marcasite
Mica	Nickeline	None	Pentlandite	Pyrite	Quartz	Rocksalt	Rutile	Scheelite	Sphalerite
Spinel

Albite ()*	Arsenopyrite ()*	Calcite ()*	Chalcopyrite ()*	Covellite ()*
Digenite ()*	Galena ()*	Gold ()*	Ilmenite ()*	Magnetite ()*
Marcasite ()*	Muscovite ()*	Pentlandite ()*	Pyrite ()*	Pyrrhotite ()*
Quartz ()*	Rutile ()*	Scheelite ()*	Sphalerite ()*

This Mineral list contains entries from this locality, including sub-localities. Minerals in bold are reported by mindat.org as occurring directly at this locality, and do not occur at any children (sublocalities) of this locality.

Elements at this locality, including sub-localities: Al As Au C Ca Cu Fe H K Na Ni O Pb S Si Ti W Zn

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Arsenopyrite Calcite Chalcopyrite Clay Copper Corundum Covellite Digenite Feldspar Marcasite
Mica Nickeline None Pentlandite Pyrite Quartz Rocksalt Rutile Scheelite Sphalerite
Spinel

19 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Albite ()*	Feldspar	Na(AlSi₃O₈)	2132	2016	2	26963,26964	8803
Arsenopyrite ()*	Arsenopyrite	FeAsS	2132	2016	2	26963,26964	9052
Calcite ()*	Calcite	Ca(CO₃)	2056	2046	1	26963	27770
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	2056	2046	1	26963	27198
Covellite ()*	Covellite	CuS	2056	2046	1	26963	4165
Digenite ()*	Digenite	Cu_1.8S	2056	2046	1	26963	1027
Galena ()*	Rocksalt	PbS	2056	2046	1	26963	24243
Gold ()*	Copper	Au	2132	2016	2	26963,26964	30554
Ilmenite ()*	Corundum	Fe²⁺Ti⁴⁺O₃	2056	2046	1	26963	5433
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	2056	2046	1	26963	14899
Marcasite ()*	Marcasite	FeS₂	2056	2046	1	26963	5674
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	2056	2046	1	26963	17380
Pentlandite ()*	Pentlandite	(Ni,Fe)₉S₈	2056	2046	1	26963	1512
Pyrite ()*	Pyrite	FeS₂	2132	2016	2	26963,26964	39462
Pyrrhotite ()*	Nickeline	Fe₇S₈	2132	2016	2	26963,26964	9056
Quartz ()*	Quartz	SiO₂	2132	2016	2	26963,26964	61156
Rutile ()*	Rutile	TiO₂	2056	2046	1	26963	5614
Scheelite ()*	Scheelite	Ca(WO₄)	2056	2046	1	26963	4894
Sphalerite ()*	Sphalerite	ZnS	2056	2046	1	26963	21482

4 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Sample Source	Sample Num	Dated Mineral	Age applies to these Elements	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference DOI	Reference ID
Alexandra-0298	2132	2122	2127±5	Pb–Pb	Age of granodiorite	zircon		Zircon		210261	Barrocas, Bahia, Brazil	Barrocas	Mello et al. (2006)	10.1007/s00126-005-0037-3	MD40_849
Alexandra-0299	2042	2016	2029±13	Ar–Ar	Age of granodiorite	biotite				210261	Barrocas, Bahia, Brazil	Barrocas	Mello et al. (2006)	10.1007/s00126-005-0037-3	MD40_849
Alexandra-0300	2054	2046	2050±4	Ar-Ar	Age of Au-mineralization	muscovite	FB2G	Muscovite	Au	191822	Fazenda Brasileiro Mine, Barrocas, Bahia, Brazil	Fazenda Brasileiro	Mello et al. (2006)	10.1007/s00126-005-0037-3	MD40_849
Alexandra-0301	2056	2052	2054±2	Ar-Ar	Age of Au-mineralization	muscovite	FB11D	Muscovite	Au	191822	Fazenda Brasileiro Mine, Barrocas, Bahia, Brazil	Fazenda Brasileiro	Mello et al. (2006)	10.1007/s00126-005-0037-3	MD40_849

All locality data graciously provided by mindat.org

All age data...