Mineral Evolution Database

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

Mineral locality data provided by mindat.org

Important Update News

The RRUFF Project has been migrated to RRUFF.net. Please update your bookmarks immediately, if you have not done so.

The data on this website is already three years out of date, and the entire website will be taken offline before the end of the year.

We are grateful to NASA for the funding of this effort.

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:
Atsimo-Atsinanana, Madagascar

mindat Locality ID: 157718
mindat URL: http://www.mindat.org/loc-157718.html

Tectonic Settings:

Total number of sublocalities beneath "Atsimo-Atsinanana, Madagascar": 17
Total number of bottom-level sublocalities: 9

Number of Child Localities: 6
Child Localities:
Befotaka
Farafangana
Isahara Pegmatite Field
Midongy Atsimo
Vangaindrano
Vondrozo

Latitude: 23°24'27"S
Longitude: 47°3'47"E
Decimal Degree (lat, lon): -23.4075,47.063055555556

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	Chlorite	Clay	Clinozoisite	Copper	Corundum	Epidote	Feldspar
None	Not in a structural group	Quartz	Rutile	Spinel	Titanite	Topaz

Anorthite ()*	Beryl ()*	Calcite ()*	Clinochlore ()*	Corundum ()*
Epidote ()*	Gibbsite ()*	Hercynite ()*	Laumontite ()*	Microcline ()*
Opal ()*	Orthoclase ()*	Platinum ()*	Pyrolusite ()*	Quartz ()*
Titanite ()*	Topaz ()*

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 Be C Ca F Fe H K Mg Mn O Pt Si Ti

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Amorphous Beryl Calcite Chlorite Clay Clinozoisite Copper Corundum Epidote Feldspar
None Not in a structural group Quartz Rutile Spinel Titanite Topaz

17 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Anorthite ()*	Feldspar	Ca(Al₂Si₂O₈)	1	79054	1036
Beryl ()*	Beryl	Be₃Al₂Si₆O₁₈	4	79047,79055,79060,79061	4286
Calcite ()*	Calcite	Ca(CO₃)	1	79058	27770
Clinochlore ()*	Chlorite Clay	Mg₅Al(AlSi₃O₁₀)(OH)₈	1	79058	1756
Corundum ()*	Corundum	Al₂O₃	1	79057	1797
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	1	79056	8173
Gibbsite ()*	None	Al(OH)₃	1	79058	504
Hercynite ()*	Spinel	Fe²⁺Al₂O₄	1	79053	407
Laumontite ()*	Not in a structural group	CaAl₂Si₄O₁₂·4H₂O	1	79058	1271
Microcline ()*	Feldspar	K(AlSi₃O₈)	1	79056	4924
Opal ()*	Amorphous	SiO₂·nH₂O	1	79050	2994
Orthoclase ()*	Feldspar	K(AlSi₃O₈)	1	79058	2349
Platinum ()*	Copper	Pt	1	79063	485
Pyrolusite ()*	Rutile	MnO₂	1	79059	3106
Quartz ()*	Quartz	SiO₂	2	79055,79058	61156
Titanite ()*	Titanite	CaTi(SiO₄)O	1	79056	4899
Topaz ()*	Topaz	Al₂SiO₄F₂	2	79047,79055	1476

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...