Complex type LCT pegmatites related to granites of the intrusive complex of Ambatofinandrahana worked for gem tourmalines. It is located just south of the Ambalalehifotsy pegmatite, near the village of Ambalamahatsara and about 20 km S of the town Ambatofinandrahana in the central highland of Madagascar.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

ⓘ Microcline

ⓘ var. Amazonite

ⓘ 'Tourmaline'

1 valid mineral.

Detailed Mineral List:

ⓘ Microcline

Formula: K(AlSi₃O₈)

References:

Pezzotta, F. & Simmons, W.B.: Field Course on the Rare Element Pegmatites of Madagascar.Technical Handbook and Field Trip guidebook. June 11-22,2001

ⓘ Microcline var. Amazonite

Formula: K(AlSi₃O₈)

References:

Pezzotta, F. & Simmons, W.B.: Field Course on the Rare Element Pegmatites of Madagascar.Technical Handbook and Field Trip guidebook. June 11-22,2001

ⓘ 'Tourmaline'

Formula: AD₃G₆(T₆O₁₈)(BO₃)₃X₃Z

Colour: Deep red

References:

Pezzotta, F. & Simmons, W.B.: Field Course on the Rare Element Pegmatites of Madagascar.Technical Handbook and Field Trip guidebook. June 11-22,2001

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 9 - Silicates
ⓘ	Microcline var. Amazonite	9.FA.30	K(AlSi₃O₈)
ⓘ		9.FA.30	K(AlSi₃O₈)
Unclassified
ⓘ	'Tourmaline'	-	AD₃G₆(T₆O₁₈)(BO₃)₃X₃Z

List of minerals for each chemical element

B	Boron
B	ⓘ Tourmaline	AD₃G₆(T₆O₁₈)(BO₃)₃X₃Z
O	Oxygen
O	ⓘ Microcline var. Amazonite	K(AlSi₃O₈)
O	ⓘ Microcline	K(AlSi₃O₈)
O	ⓘ Tourmaline	AD₃G₆(T₆O₁₈)(BO₃)₃X₃Z
Al	Aluminium
Al	ⓘ Microcline var. Amazonite	K(AlSi₃O₈)
Al	ⓘ Microcline	K(AlSi₃O₈)
Si	Silicon
Si	ⓘ Microcline var. Amazonite	K(AlSi₃O₈)
Si	ⓘ Microcline	K(AlSi₃O₈)
K	Potassium
K	ⓘ Microcline var. Amazonite	K(AlSi₃O₈)
K	ⓘ Microcline	K(AlSi₃O₈)

Other Regions, Features and Areas containing this locality

Madagascar

Ankaratra Volcanic RangeVolcanic Range
⭔Fianarantsoa ProvinceProvince

Somali PlateTectonic Plate

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

mentioned in: Pezzotta, F. & Simmons, W.B.: Field Course on the Rare Element Pegmatites of Madagascar.Technical Handbook and Field Trip guidebook. June 11-22,2001

Behier, Jean (1963) Carte minéralogique de Madagascar. Archive Service Géologique de Madagascar A.1871

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