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:
Sandur, Bellary-Hospet Iron Belt, Bellary District, Karnataka, India

Oldest recorded age at locality: 53
Youngest recorded age at locality: 9

mindat Locality ID: 279945
mindat URL: http://www.mindat.org/loc-279945.html

Tectonic Settings:

Total number of sublocalities beneath "Sandur, Bellary-Hospet Iron Belt, Bellary District, Karnataka, India": 1
Total number of bottom-level sublocalities: 1

Number of Child Localities: 1
Child Localities:
Donimalai Mine

Latitude: 0°0'0"N
Longitude: 0°0'0"E
Decimal Degree (lat, lon): 0,0

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.

Bixbyite	Braunite	Brucite	Coronadite	None	Ramsdellite	Rocksalt	Rutile	Spinel

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 Fe H K Li Mn O Pb Si Zn

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Bixbyite Braunite Brucite Coronadite None Ramsdellite Rocksalt Rutile Spinel

11 IMA Minerals at location:

Bixbyite ()*	Braunite ()*	Coronadite ()*	Cryptomelane ()*	Jacobsite ()*
Lithiophorite ()*	Manganosite ()*	Pyrochroite ()*	Pyrolusite ()*	Ramsdellite ()*
Woodruffite ()*

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
Bixbyite ()*	Bixbyite	Mn³⁺₂O₃	53	9	1	66295	104
Braunite ()*	Braunite	Mn²⁺Mn³⁺₆O₈(SiO₄)	53	9	1	66295	483
Coronadite ()*	Coronadite	Pb(Mn⁴⁺₆Mn³⁺₂)O₁₆	53	9	1	66295	227
Cryptomelane ()*	Coronadite	K(Mn⁴⁺₇Mn³⁺)O₁₆	53	9	1	66295	599
Jacobsite ()*	Spinel	Mn²⁺Fe³⁺₂O₄	53	9	1	66295	172
Lithiophorite ()*	None	(Al,Li)(Mn⁴⁺,Mn³⁺)O₂(OH)₂	53	9	1	66295	210
Manganosite ()*	Rocksalt	MnO	53	9	1	66295	73
Pyrochroite ()*	Brucite	Mn²⁺(OH)₂	53	9	1	66295	56
Pyrolusite ()*	Rutile	MnO₂	53	9	1	66295	3106
Ramsdellite ()*	Ramsdellite	MnO₂	53	9	1	66295	88
Woodruffite ()*	None	Zn₂(Mn⁴⁺,Mn³⁺)₅O₁₀·4H₂O	53	9	1	66295	25

5 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Sample Source	Dated Mineral	Age applies to these Elements	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference DOI	Reference ID	Age Notes
Scott-G44_299-0001	53	50	53-50	40Ar-39Ar	age of weathering	cryptomelane	Cryptomelane	Mn	279945	Sandur, Bellary-Hospet Iron Belt, Bellary District, Karnataka, India	Sandur Mn-ore deposit	Beauvais et al. (2016)	10.1130/G37303.1	G44_299	Age for highland Sandur deposit, (bauxitic) weathering
Scott-G44_299-0002	36	26	36-26	40Ar-39Ar	age of weathering	cryptomelane	Cryptomelane	Mn	279945	Sandur, Bellary-Hospet Iron Belt, Bellary District, Karnataka, India	Sandur Mn-ore deposit	Beauvais et al. (2016)	10.1130/G37303.1	G44_299	Age for highland Sandur deposit, geochemical reworking of bauxites
Scott-G44_299-0003	47	45	47-45	40Ar-39Ar	age of weathering	cryptomelane	Cryptomelane	Mn	279945	Sandur, Bellary-Hospet Iron Belt, Bellary District, Karnataka, India	Sandur Mn-ore deposit	Beauvais et al. (2016)	10.1130/G37303.1	G44_299	Age for lowland Sandur deposit, early lateritic weathering
Scott-G44_299-0004	24	19	24-19	40Ar-39Ar	age of weathering	cryptomelane	Cryptomelane	Mn	279945	Sandur, Bellary-Hospet Iron Belt, Bellary District, Karnataka, India	Sandur Mn-ore deposit	Beauvais et al. (2016)	10.1130/G37303.1	G44_299	Age for lowland Sandur deposit, weathering and formation of the pediment’s capping ferricrete
Scott-G44_299-0005	9	9	9	40Ar-39Ar	age of weathering	cryptomelane	Cryptomelane	Mn	279945	Sandur, Bellary-Hospet Iron Belt, Bellary District, Karnataka, India	Sandur Mn-ore deposit	Beauvais et al. (2016)	10.1130/G37303.1	G44_299	Age for lowland Sandur deposit, discrete weathering pulse, which left little imprint in the weathering profile

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...