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:
Tsihombe, Androy, Madagascar

mindat Locality ID: 157728
mindat URL: http://www.mindat.org/loc-157728.html

Tectonic Settings:

Total number of sublocalities beneath "Tsihombe, Androy, Madagascar": 12
Total number of bottom-level sublocalities: 11

Number of Child Localities: 1
Child Localities:
Tsihombe Commune

Latitude: 25°18'40"S
Longitude: 45°33'57"E
Decimal Degree (lat, lon): -25.311111111111,45.565833333333

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.

Amorphous	Beryl	Calcite	Clay	Fluorite	Mica	None	Pyrite	Pyroxene	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 C Ca F Fe H K Mg O S Si

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Amorphous Beryl Calcite Clay Fluorite Mica None Pyrite Pyroxene Spinel

8 IMA Minerals at location:

Calcite ()*	Cordierite ()*	Diopside ()*	Fluorite ()*	Opal ()*
Phlogopite ()*	Pyrite ()*	Spinel ()*

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Calcite ()*	Calcite	Ca(CO₃)	1	78678	27770
Cordierite ()*	Beryl	Mg₂Al₄Si₅O₁₈	1	78673	1008
Diopside ()*	Pyroxene	CaMgSi₂O₆	1	78678	4135
Fluorite ()*	Fluorite	CaF₂	1	78678	9617
Opal ()*	Amorphous	SiO₂·nH₂O	2	78670,78678	2994
Phlogopite ()*	Mica Clay	KMg₃(AlSi₃O₁₀)(OH)₂	10	78668,78669,78670,78671,78672,78674,78675,78676,78677,78678	2273
Pyrite ()*	Pyrite	FeS₂	1	78678	39462
Spinel ()*	Spinel	MgAl₂O₄	1	78674	1934

No ages have been assigned to this locality yet.

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...