Mineral Evolution Database

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

Mineral locality data provided by mindat.org

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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:
Alaotra-Mangoro, Madagascar

mindat Locality ID: 157725
mindat URL: http://www.mindat.org/loc-157725.html

Tectonic Settings:

Total number of sublocalities beneath "Alaotra-Mangoro, Madagascar": 90
Total number of bottom-level sublocalities: 66

Number of Child Localities: 6
Child Localities:
Ambatondrazaka
Amparafaravola
Andilamena
Anosibe An'ala
Lake Alaotra
Moramanga

Latitude: 17°48'30"S
Longitude: 48°34'16"E
Decimal Degree (lat, lon): -17.808333333333,48.571111111111

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	Clay	Columbite	Copper	Corundum	Covellite	Diaspore	Dumortierite	Feldspar
Garnet	Kaolinite	Mica	Natrolite	None	Not in a structural group	Olivine	Perovskite	Quartz	Smectite-vermiculite
Spinel	Tetrahedrite	Topaz	Tourmaline	Zircon

Albite ()*	Almandine ()*	Beryl ()*	Chrysoberyl ()*	Corundum ()*
Covellite ()*	Dumortierite ()*	Elbaite ()*	Euclase ()*	Goethite ()*
Gold ()*	Graphite ()*	Hematite ()*	Kaolinite ()*	Magnetite ()*
Microcline ()*	Muscovite ()*	Nontronite ()*	Opal ()*	Orthoclase ()*
Perovskite ()*	Platinum ()*	Quartz ()*	Samarskite-(Y) ()*	Schorl ()*
Scolecite ()*	Sillimanite ()*	Spessartine ()*	Spinel ()*	Tetrahedrite-(Zn) ()*
Topaz ()*	Vermiculite ()*	Zircon ()*

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 Au B Be C Ca Cu F Fe H K Li Mg Mn Na Nb O Pt S Sb Si Ti Y Zr

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Amorphous Beryl Clay Columbite Copper Corundum Covellite Diaspore Dumortierite Feldspar
Garnet Kaolinite Mica Natrolite None Not in a structural group Olivine Perovskite Quartz Smectite-vermiculite
Spinel Tetrahedrite Topaz Tourmaline Zircon

33 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Albite ()*	Feldspar	Na(AlSi₃O₈)	2	78319,78368	8803
Almandine ()*	Garnet	Fe²⁺₃Al₂(SiO₄)₃	1	78302	2353
Beryl ()*	Beryl	Be₃Al₂Si₆O₁₈	12	78289,78298,78300,78307,78319,78324,78329,78335,78342,78348,78354,78365	4286
Chrysoberyl ()*	Olivine	BeAl₂O₄	7	78292,78298,78300,78301,78306,78319,78324	321
Corundum ()*	Corundum	Al₂O₃	10	78294,78309,78310,78311,78312,78313,78367,78368,78369,78374	1797
Covellite ()*	Covellite	CuS	1	78370	4165
Dumortierite ()*	Dumortierite	AlAl₆BSi₃O₁₈	2	78298,78300	231
Elbaite ()*	Tourmaline	Na(Al_1.5Li_1.5)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	1	78354	520
Euclase ()*	None	BeAlSiO₄(OH)	1	78335	120
Goethite ()*	Diaspore	FeO(OH)	2	78339,78359	7437
Gold ()*	Copper	Au	2	78354,78370	30554
Graphite ()*	None	C	1	78294	2812
Hematite ()*	Corundum	Fe₂O₃	2	78339,78359	14640
Kaolinite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄	2	78329,78339	5591
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	7	78298,78299,78315,78316,78329,78359,78368	14899
Microcline ()*	Feldspar	K(AlSi₃O₈)	5	78297,78300,78319,78329,78368	4924
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	5	78297,78300,78302,78324,78329	17380
Nontronite ()*	Clay Smectite-vermiculite	Na_0.3Fe³⁺₂(Si,Al)₄O₁₀(OH)₂·nH₂O	1	78334	471
Opal ()*	Amorphous	SiO₂·nH₂O	1	78298	2994
Orthoclase ()*	Feldspar	K(AlSi₃O₈)	1	78289	2349
Perovskite ()*	Perovskite	CaTiO₃	1	78327	495
Platinum ()*	Copper	Pt	1	78353	485
Quartz ()*	Quartz	SiO₂	18	78298,78299,78300,78301,78302,78306,78307,78309,78315,78316,78319,78329,78335,78339,78340,78354,78355,78370	61156
Samarskite-(Y) ()*	Columbite	YFe³⁺Nb₂O₈	1	78329	353
Schorl ()*	Tourmaline	NaFe²⁺₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	5	78298,78302,78305,78319,78354	2705
Scolecite ()*	Natrolite	Ca(Si₃Al₂)O₁₀·3H₂O	1	78332	390
Sillimanite ()*	Not in a structural group	Al₂SiO₅	2	78368,78369	1516
Spessartine ()*	Garnet	Mn²⁺₃Al₂(SiO₄)₃	2	78298,78329	1214
Spinel ()*	Spinel	MgAl₂O₄	2	78367,78368	1934
Tetrahedrite-(Zn) ()*	Tetrahedrite	Cu₆(Cu₄Zn₂)Sb₄S₁₃	1	78355	5317
Topaz ()*	Topaz	Al₂SiO₄F₂	1	78348	1476
Vermiculite ()*	Clay Smectite-vermiculite	Mg_0.7(Mg,Fe,Al)₆(Si,Al)₈O₂₀(OH)₄·8H₂O	6	78298,78299,78300,78315,78316,78329	652
Zircon ()*	Zircon	Zr(SiO₄)	3	78294,78368,78369	5251

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...