Ihovitra, Itremo, Ambatofinandrahana District, Amoron'i Mania, Madagascari
| Regional Level Types | |
|---|---|
| Ihovitra | Group of Quarries |
| Itremo | Commune |
| Ambatofinandrahana District | District |
| Amoron'i Mania | Region |
| Madagascar | Country |
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Latitude & Longitude (WGS84):
20° South , 46° East (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~34km
Type:
Group of Quarries
Köppen climate type:
Other/historical names associated with this locality:
Anovitra; Iovitra; Ivohitra
Other Languages:
Malagasy:
Ihovitra (Ivohitra?), Kaominin' Itremo, Distrikan' Ambatofinandrahana, Faritra Amoron'i Mania, Madagasikara
A locality for quartz crystals with green phantoms situated about 50 km west of the town Ambatofinandrahana in the southwestern part of the central highland of Madagascar.
Note on the spelling of the locality name:
The spelling Ihovitra which is used in the reference, may be a mispelling; it is more likely to be Ivohitra which is a common name of high hills in Madagascar. The variety Iovitra which has been used, is a misnomer.
The green inclusion:
Questions have been raised on the identity of the green micaceous mineral that occurs as inclusions in quartz crystals from this site. Samples have been labelled as celadonite, fuchsite and chlorite. See discussion at messageboard at https://www.mindat.org/mesg-301731.html. An analysis by Raman microspectroscopy at the GIA labs in 2009 has showed these to be fuchsite, a chromium bearing muscovite (Renfro 2009).
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Formula: K(MgFe3+◻)(Si4O10)(OH)2 Description: The green inclusions in the quartz crystals are showed to be fuchsite, see reference unnder that entry. References: |
| ⓘ ' |
| ⓘ Muscovite Formula: KAl2(AlSi3O10)(OH)2 |
| ⓘ Muscovite var. Fuchsite Formula: K(Al,Cr)3Si3O10(OH)2 References: |
| ⓘ 'Pumpellyite Subgroup' Formula: Ca2XAl2[Si2O6(OH)][SiO4](OH)2A |
| ⓘ Quartz Formula: SiO2 Habit: Clear crystals with green phantoms |
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 9 - Silicates | |||
| ⓘ | Celadonite ? | 9.EC.15 | K(MgFe3+◻)(Si4O10)(OH)2 |
| ⓘ | Muscovite var. Fuchsite | 9.EC.15 | K(Al,Cr)3Si3O10(OH)2 |
| ⓘ | 9.EC.15 | KAl2(AlSi3O10)(OH)2 | |
| Unclassified | |||
| ⓘ | 'Chlorite Group' ? | - | |
| ⓘ | 'Pumpellyite Subgroup' | - | Ca2XAl2[Si2O6(OH)][SiO4](OH)2A |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Celadonite | K(MgFe3+◻)(Si4O10)(OH)2 |
| H | ⓘ Muscovite var. Fuchsite | K(Al,Cr)3Si3O10(OH)2 |
| H | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| H | ⓘ Pumpellyite Subgroup | Ca2XAl2[Si2O6(OH)][SiO4](OH)2A |
| O | Oxygen | |
| O | ⓘ Celadonite | K(MgFe3+◻)(Si4O10)(OH)2 |
| O | ⓘ Muscovite var. Fuchsite | K(Al,Cr)3Si3O10(OH)2 |
| O | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| O | ⓘ Pumpellyite Subgroup | Ca2XAl2[Si2O6(OH)][SiO4](OH)2A |
| O | ⓘ Quartz | SiO2 |
| Mg | Magnesium | |
| Mg | ⓘ Celadonite | K(MgFe3+◻)(Si4O10)(OH)2 |
| Al | Aluminium | |
| Al | ⓘ Muscovite var. Fuchsite | K(Al,Cr)3Si3O10(OH)2 |
| Al | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Al | ⓘ Pumpellyite Subgroup | Ca2XAl2[Si2O6(OH)][SiO4](OH)2A |
| Si | Silicon | |
| Si | ⓘ Celadonite | K(MgFe3+◻)(Si4O10)(OH)2 |
| Si | ⓘ Muscovite var. Fuchsite | K(Al,Cr)3Si3O10(OH)2 |
| Si | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Si | ⓘ Pumpellyite Subgroup | Ca2XAl2[Si2O6(OH)][SiO4](OH)2A |
| Si | ⓘ Quartz | SiO2 |
| K | Potassium | |
| K | ⓘ Celadonite | K(MgFe3+◻)(Si4O10)(OH)2 |
| K | ⓘ Muscovite var. Fuchsite | K(Al,Cr)3Si3O10(OH)2 |
| K | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Ca | Calcium | |
| Ca | ⓘ Pumpellyite Subgroup | Ca2XAl2[Si2O6(OH)][SiO4](OH)2A |
| Cr | Chromium | |
| Cr | ⓘ Muscovite var. Fuchsite | K(Al,Cr)3Si3O10(OH)2 |
| Fe | Iron | |
| Fe | ⓘ Celadonite | K(MgFe3+◻)(Si4O10)(OH)2 |
Other Regions, Features and Areas containing this locality
AfricaContinent
African Plate
- BemItremo BlockOrogenic Belt
Madagascar
- Amoron'i Mania
- Ambatofinandrahana District
- Itremo massifMassif
- Ambatofinandrahana District
- Ankaratra Volcanic RangeVolcanic Range
- ⭔Fianarantsoa ProvinceProvince
Somali PlateTectonic Plate
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References
Bayle, Louis-Dominique, Goujou, Jean-Christian, De Ascenção Guedes, Roger (2002) Bourse de Munich 2001- 26 au 28 octobre 2001 [Munich Show 2001- October 26 to 28, 2001]. Le Règne Minéral, 8 (44) 5-11p.10 - note on find of fuchsite as inclusions in quartz
Ihovitra, Itremo, Ambatofinandrahana District, Amoron'i Mania, Madagascar