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Andilamena Quartz Quarries, Andranotokana Massif, Andilamena, Alaotra-Mangoro, Madagascari
Regional Level Types
Andilamena Quartz QuarriesGroup of Quarries
Andranotokana MassifMassif
AndilamenaDistrict
Alaotra-MangoroRegion
MadagascarCountry

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Name(s) in local language(s):Fitondrahan' ny vatokaranana, Andranotokana Massif, Andilamena District, Alaotra-Mangoro Region, Toamasina Province (Tamatave), Madagascar
Location is approximate, estimate based on other nearby localities.
 
Latitude & Longitude (WGS84): 16° South , 48° East (est.)
Margin of Error:~70km
Locality type:Group of Quarries
Köppen climate type:Am : Tropical monsoon climate


Several thousand specimens of Japanese law twin quartz, up to 25 cm large, were uncovered by the company Tropic Stone SARL, from June 2000 to February 2001 in a breccia complex, in the Andranotokana Massif, north of the village of Andilamena, north of Ambatondrazaka. The mineralization is linked to a hydrothermal activity associated with tectonics in a metamorphic context (Forner et al. 2001).

Specimens from this locality are often labelled with the locality "Andilamena" which is the name/center of the district where the specimens were found.

Locality spelled erroneously "Anohlamena" in Moore (2001).

Alternative Label Names

This is a list of additional names that have been recorded for mineral labels associated with this locality in the minID database. This may include previous versions of the locality name hierarchy from mindat.org, data entry errors, and it may also include unconfirmed sublocality names or other names that can only be matched to this level.

Andilamena (Anohlamena), Andilamena District, Alaotra-Mangoro Region, Toamasina Province (Tamatave), Madagascar

Regions containing this locality

Somalia Plate

Plate - 1,505 mineral species & varietal names listed

Toamasina Province (Tamatave), Madagascar

Province (Abolished) - 120 mineral species & varietal names listed

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List

Mineral list contains entries from the region specified including sub-localities

4 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Rock list contains entries from the region specified including sub-localities

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

'Amphibolite'
Reference: Forner, H.. Gautier, F. & Thomas, L. (2001) Les macles de quartz de la région d`Andilamena, Madagascar. Le Règne Minéral. 39: 42-46.
'Ferrierite'
Reference: Forner, H.. Gautier, F. & Thomas, L. (2001) Les macles de quartz de la région d`Andilamena, Madagascar. Le Règne Minéral, nr. 39, 42-46.
Goethite
Formula: α-Fe3+O(OH)
Reference: Knut Edvard Larsen collection
Hematite
Formula: Fe2O3
Reference: Moore, T.(2001): What is new in Minerals. Tuscon Show 2001. Mineralogical Record 32(3), p 252
'Hydrothermal breccia'
Reference: Forner, H.. Gautier, F. & Thomas, L. (2001) Les macles de quartz de la région d`Andilamena, Madagascar. Le Règne Minéral. 39: 42-46.
Kaolinite
Formula: Al2(Si2O5)(OH)4
Reference: Forner, H.. Gautier, F. & Thomas, L. (2001) Les macles de quartz de la région d`Andilamena, Madagascar. Le Règne Minéral. 39: 42-46.
Quartz
Formula: SiO2
Reference: Forner, H.. Gautier, F. & Thomas, L. (2001) Les macles de quartz de la région d`Andilamena, Madagascar. Le Règne Minéral, nr. 39, 42-46.
Quartz var: Amethyst
Formula: SiO2
Reference: Moore, T.(2001): What is new in Minerals. Tuscon Show 2001. Mineralogical Record 32(3), p 252
Quartz var: Chalcedony
Formula: SiO2
Reference: Moore, T.(2001): What is new in Minerals. Tuscon Show 2001. Mineralogical Record 32(3), p 252
Quartz var: Smoky Quartz
Formula: SiO2
Reference: Treillard Michel photo & collection

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Goethite4.00.α-Fe3+O(OH)
Hematite4.CB.05Fe2O3
Quartz4.DA.05SiO2
var: Amethyst4.DA.05SiO2
var: Chalcedony4.DA.05SiO2
var: Smoky Quartz4.DA.05SiO2
Group 9 - Silicates
Kaolinite9.ED.05Al2(Si2O5)(OH)4
Unclassified Minerals, Rocks, etc.
Amphibolite-
Ferrierite-
Hydrothermal breccia-

List of minerals arranged by Dana 8th Edition classification

Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Goethite6.1.1.2α-Fe3+O(OH)
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Rocks, etc.
'Amphibolite'-
'Ferrierite'-
'Hydrothermal breccia'-
Kaolinite-Al2(Si2O5)(OH)4
Quartz
var: Amethyst
-SiO2
var: Chalcedony-SiO2
var: Smoky Quartz-SiO2

List of minerals for each chemical element

HHydrogen
H Goethiteα-Fe3+O(OH)
H KaoliniteAl2(Si2O5)(OH)4
OOxygen
O Quartz (var: Amethyst)SiO2
O Quartz (var: Chalcedony)SiO2
O Goethiteα-Fe3+O(OH)
O HematiteFe2O3
O KaoliniteAl2(Si2O5)(OH)4
O QuartzSiO2
O Quartz (var: Smoky Quartz)SiO2
AlAluminium
Al KaoliniteAl2(Si2O5)(OH)4
SiSilicon
Si Quartz (var: Amethyst)SiO2
Si Quartz (var: Chalcedony)SiO2
Si KaoliniteAl2(Si2O5)(OH)4
Si QuartzSiO2
Si Quartz (var: Smoky Quartz)SiO2
FeIron
Fe Goethiteα-Fe3+O(OH)
Fe HematiteFe2O3

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Moore, T. (2001) What is new in Minerals. Tucson Show 2001. Mineralogical Record, 32(3), 252.
Forner, H., Gautier, F., and Thomas, L. (2001) Les macles de quartz de la région d'Andilamena, Madagascar. Le Règne Minéral, 39, 42-46.
Moore, T. (2002) What's New in Minerals? Tucson Show 2002. Mineralogical Record, 33, 261-266, 273-275 [p. 273].

Localities in this Region
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Madagascar
  • Alaotra-Mangoro

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