Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Iakora District, Ihorombe, Madagascari
Regional Level Types
Iakora DistrictDistrict
IhorombeRegion
MadagascarCountry

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06990400017272084361351.jpg
Zircon

Sakasoa phlogopite mine, Iakora Commune, Iakora District, Ihorombe, Madagascar
00957500017272011254419.jpg
Zircon

Sakasoa phlogopite mine, Iakora Commune, Iakora District, Ihorombe, Madagascar
06990400017272084361351.jpg
Zircon

Sakasoa phlogopite mine, Iakora Commune, Iakora District, Ihorombe, Madagascar
00957500017272011254419.jpg
Zircon

Sakasoa phlogopite mine, Iakora Commune, Iakora District, Ihorombe, Madagascar
06990400017272084361351.jpg
Zircon

Sakasoa phlogopite mine, Iakora Commune, Iakora District, Ihorombe, Madagascar
00957500017272011254419.jpg
Zircon

Sakasoa phlogopite mine, Iakora Commune, Iakora District, Ihorombe, Madagascar
Neighbouring regions:
Betroka District, Anosy, Madagascar
Ihosy District, Ihorombe, Madagascar
Midongy Atsimo, Atsimo-Atsinanana, Madagascar
Befotaka District, Atsimo-Atsinanana, Madagascar
Ivohibe District, Ihorombe, Madagascar
Type:
District
Mindat Locality ID:
159151
Long-form identifier:
mindat:1:2:159151:7
GUID (UUID V4):
0
Other Languages:
View 4 more...
French:
Iakora, Ihorombe, Madagascar
Italian:
Iakora, regione di Ihorombe, Madagascar
Malagasy:
Distrikan' Iakora, Faritr' Ihorombe, Madagasikara
Spanish:
Iakora, Región de Ihorombe, Madagascar
Basque:
Iakora, Madagaskar
Dutch:
Iakora, Ihorombe, Madagaskar
Farsi/Persian:
ایاکورا, ایهورومبه, ماداگاسکار
Zulu:
Iakora, IMadagasika


No description has been added for this locality. Can you add one?

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.


Mineral List

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

11 valid minerals.

Rock Types Recorded


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

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Anorthite
Formula: Ca(Al2Si2O8)
ⓘ 'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
ⓘ Beryl
Formula: Be3Al2(Si6O18)
ⓘ Calcite
Formula: CaCO3
ⓘ Chrysoberyl
Formula: BeAl2O4
ⓘ Cordierite
Formula: Mg2Al4Si5O18
ⓘ Diopside
Formula: CaMgSi2O6
Description: A 10 cm large specimen weighing 500gr is mentioned by Behier (1960)
ⓘ Kornerupine
Formula: Mg3Al6(Si,Al,B)5O21(OH)
ⓘ Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
ⓘ Quartz
Formula: SiO2
ⓘ Quartz var. Amethyst
Formula: SiO2
ⓘ 'Scapolite'
ⓘ 'Scapolite var. Wernerite'
ⓘ Spinel
Formula: MgAl2O4
ⓘ Zircon
Formula: Zr(SiO4)
Colour: brown
Description: According to Behier (1960) a group of two large crystals measuring > 10 cm and weighing 500 gram has been found here

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘChrysoberyl4.BA.05BeAl2O4
ⓘSpinel4.BB.05MgAl2O4
ⓘQuartz
var. Amethyst		4.DA.05SiO2
ⓘ4.DA.05SiO2
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
Group 9 - Silicates
ⓘZircon9.AD.30Zr(SiO4)
ⓘKornerupine9.BJ.50Mg3Al6(Si,Al,B)5O21(OH)
ⓘBeryl9.CJ.05Be3Al2(Si6O18)
ⓘCordierite9.CJ.10Mg2Al4Si5O18
ⓘDiopside9.DA.15CaMgSi2O6
ⓘPhlogopite9.EC.20KMg3(AlSi3O10)(OH)2
ⓘAnorthite9.FA.35Ca(Al2Si2O8)
Unclassified
ⓘ'Scapolite
var. Wernerite'		-
ⓘ''-
ⓘ'Apatite'-Ca5(PO4)3(Cl/F/OH)

List of minerals for each chemical element

HHydrogen
Hⓘ KornerupineMg3Al6(Si,Al,B)5O21(OH)
Hⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Hⓘ ApatiteCa5(PO4)3(Cl/F/OH)
BeBeryllium
Beⓘ BerylBe3Al2(Si6O18)
Beⓘ ChrysoberylBeAl2O4
BBoron
Bⓘ KornerupineMg3Al6(Si,Al,B)5O21(OH)
CCarbon
Cⓘ CalciteCaCO3
Cⓘ Scapolite var. Wernerite
OOxygen
Oⓘ Quartz var. AmethystSiO2
Oⓘ AnorthiteCa(Al2Si2O8)
Oⓘ BerylBe3Al2(Si6O18)
Oⓘ CalciteCaCO3
Oⓘ ChrysoberylBeAl2O4
Oⓘ CordieriteMg2Al4Si5O18
Oⓘ DiopsideCaMgSi2O6
Oⓘ KornerupineMg3Al6(Si,Al,B)5O21(OH)
Oⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Oⓘ QuartzSiO2
Oⓘ SpinelMgAl2O4
Oⓘ Scapolite var. Wernerite
Oⓘ ZirconZr(SiO4)
Oⓘ ApatiteCa5(PO4)3(Cl/F/OH)
FFluorine
Fⓘ ApatiteCa5(PO4)3(Cl/F/OH)
NaSodium
Naⓘ Scapolite var. Wernerite
MgMagnesium
Mgⓘ CordieriteMg2Al4Si5O18
Mgⓘ DiopsideCaMgSi2O6
Mgⓘ KornerupineMg3Al6(Si,Al,B)5O21(OH)
Mgⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Mgⓘ SpinelMgAl2O4
AlAluminium
Alⓘ AnorthiteCa(Al2Si2O8)
Alⓘ BerylBe3Al2(Si6O18)
Alⓘ ChrysoberylBeAl2O4
Alⓘ CordieriteMg2Al4Si5O18
Alⓘ KornerupineMg3Al6(Si,Al,B)5O21(OH)
Alⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Alⓘ SpinelMgAl2O4
Alⓘ Scapolite var. Wernerite
SiSilicon
Siⓘ Quartz var. AmethystSiO2
Siⓘ AnorthiteCa(Al2Si2O8)
Siⓘ BerylBe3Al2(Si6O18)
Siⓘ CordieriteMg2Al4Si5O18
Siⓘ DiopsideCaMgSi2O6
Siⓘ KornerupineMg3Al6(Si,Al,B)5O21(OH)
Siⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Siⓘ QuartzSiO2
Siⓘ Scapolite var. Wernerite
Siⓘ ZirconZr(SiO4)
PPhosphorus
Pⓘ ApatiteCa5(PO4)3(Cl/F/OH)
ClChlorine
Clⓘ Scapolite var. Wernerite
Clⓘ ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
Kⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
CaCalcium
Caⓘ AnorthiteCa(Al2Si2O8)
Caⓘ CalciteCaCO3
Caⓘ DiopsideCaMgSi2O6
Caⓘ Scapolite var. Wernerite
Caⓘ ApatiteCa5(PO4)3(Cl/F/OH)
ZrZirconium
Zrⓘ ZirconZr(SiO4)

Fossils

This region is too big or complex to display the fossil list, try looking at smaller subregions.

Other Databases

Wikipedia:https://en.wikipedia.org/wiki/Iakora
Wikidata ID:Q3147205
GeoNames ID:11926399

Localities in this Region

Madagascar

Other Regions, Features and Areas that Intersect

AfricaContinent
African Plate
Somali PlateTectonic Plate

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