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Ipê mine, Golconda mining district, Governador Valadares, Minas Gerais, Brazili
Regional Level Types
Ipê mineMine
Golconda mining districtMining District
Governador ValadaresMunicipality
Minas GeraisState
BrazilCountry

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Latitude & Longitude (WGS84):
18° 44' 35'' South , 42° 6' 26'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Governador Valadares250,878 (2012)20.5km
Peçanha6,902 (2012)52.1km
Açucena14,505 (2012)58.9km
Belo Oriente18,470 (2012)66.1km
Mindat Locality ID:
21776
Long-form identifier:
mindat:1:2:21776:4
GUID (UUID V4):
45cb66b4-d66e-4494-a314-61984aa1e034


Note: There are numerous pits in the area reported for this mine, and it may be that material from more than one of these pits is labelled as from “Ipê mine.”

The mined area is roughly 15-20 km northwest of Governador Valadares, between the communities of Chonim on Brazil Highway 451 and São Antônio do Pontal on Brazil Highway 259. This is within the São José da Safira Pegmatite District, where mining began after the end of the Second World War. The Ipê area itself, however, has not been a prolific source of collector’s specimens. In particular, however, the Ipê pegmatite is known for production of microlite group minerals and others containing niobium, tantalum, and beryllium.

The Ipê Pegmatite intrudes fine-grained marine sediments including chert with banded iron formation intercalated with basaltic volcanics. These are sea-floor deposits, assigned to the Neoproterozoic Ribeirão da Folha Formation in the Macaúbas Group (deposited ca. 670 Ma). They were metamorphosed to garnet-quartz-mica schists and amphibolites during the Brazilian Orogeny, ca. 630 Ma., when the marine basin closed at a convergent plate boundary and the Araçuaí orogen was produced. Post-collisional decompression led to melting that produced granites at ca. 535-500 Ma. The resulting plutons show igneous flow structures, contain xenoliths and roof pendants of the country rocks, and are capped by scattered zones of residual pegmatites which are the targets of mining in this area.

NK, September 2016

Note to the mineralist:
For discussion on oxycalciomicrolite see messageboard at https://www.mindat.org/mesg-281777.html#281783

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


12 valid minerals.

Detailed Mineral List:

Albite
Formula: Na(AlSi3O8)
Bertrandite
Formula: Be4(Si2O7)(OH)2
Beryl
Formula: Be3Al2(Si6O18)
Description: Medium to low gem quality.
Beryl var. Aquamarine
Formula: Be3Al2Si6O18
Description: Medium to low gem quality.
Columbite-(Fe)
Formula: Fe2+Nb2O6
Fluorcalciomicrolite
Formula: (Ca,Na)2(Ta,Nb)2O6F
Habit: ~1 mm transparent yellowish octahedrons precepitations over albite crystalline crusts
Colour: honey-yellow
Fluorescence: none
Description: Composition of the mineral is (Ca.95Na.62Pb.05)1.62(Ta1.54Nb.34Ti.12)2.00O5.50(F1.00OH.50)1.50
'K Feldspar'
Microcline
Formula: K(AlSi3O8)
'Microlite Group'
Formula: A2-mTa2X6-wZ-n
Habit: octahedrons to 7mm
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Oxycalciomicrolite
Formula: Ca2Ta2O6O
Quartz
Formula: SiO2
Schorl
Formula: NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
Tantalite-(Mn)
Formula: Mn2+Ta2O6
Zircon
Formula: Zr(SiO4)

Gallery:

A2-mTa2X6-wZ-n 'Microlite Group'
Zr(SiO4) Zircon

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
'Microlite Group'4.00.A2-mTa2X6-wZ-n
Quartz4.DA.05SiO2
Columbite-(Fe)4.DB.35Fe2+Nb2O6
Tantalite-(Mn)4.DB.35Mn2+Ta2O6
Fluorcalciomicrolite4.DH.15(Ca,Na)2(Ta,Nb)2O6F
Oxycalciomicrolite4.DH.15Ca2Ta2O6O
Group 9 - Silicates
Zircon9.AD.30Zr(SiO4)
Bertrandite9.BD.05Be4(Si2O7)(OH)2
Beryl
var. Aquamarine
9.CJ.05Be3Al2Si6O18
9.CJ.05Be3Al2(Si6O18)
Schorl9.CK.05NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
Microcline9.FA.30K(AlSi3O8)
Albite9.FA.35Na(AlSi3O8)
Unclassified
'K Feldspar'-

List of minerals for each chemical element

HHydrogen
H BertranditeBe4(Si2O7)(OH)2
H MuscoviteKAl2(AlSi3O10)(OH)2
H SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
BeBeryllium
Be Beryl var. AquamarineBe3Al2Si6O18
Be BertranditeBe4(Si2O7)(OH)2
Be BerylBe3Al2(Si6O18)
BBoron
B SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
OOxygen
O AlbiteNa(AlSi3O8)
O Beryl var. AquamarineBe3Al2Si6O18
O BertranditeBe4(Si2O7)(OH)2
O BerylBe3Al2(Si6O18)
O Columbite-(Fe)Fe2+Nb2O6
O Tantalite-(Mn)Mn2+Ta2O6
O MicroclineK(AlSi3O8)
O MuscoviteKAl2(AlSi3O10)(OH)2
O QuartzSiO2
O SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
O ZirconZr(SiO4)
O Fluorcalciomicrolite(Ca,Na)2(Ta,Nb)2O6F
O OxycalciomicroliteCa2Ta2O6O
FFluorine
F Fluorcalciomicrolite(Ca,Na)2(Ta,Nb)2O6F
NaSodium
Na AlbiteNa(AlSi3O8)
Na SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Na Fluorcalciomicrolite(Ca,Na)2(Ta,Nb)2O6F
AlAluminium
Al AlbiteNa(AlSi3O8)
Al Beryl var. AquamarineBe3Al2Si6O18
Al BerylBe3Al2(Si6O18)
Al MicroclineK(AlSi3O8)
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
SiSilicon
Si AlbiteNa(AlSi3O8)
Si Beryl var. AquamarineBe3Al2Si6O18
Si BertranditeBe4(Si2O7)(OH)2
Si BerylBe3Al2(Si6O18)
Si MicroclineK(AlSi3O8)
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si QuartzSiO2
Si SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Si ZirconZr(SiO4)
KPotassium
K MicroclineK(AlSi3O8)
K MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Ca Fluorcalciomicrolite(Ca,Na)2(Ta,Nb)2O6F
Ca OxycalciomicroliteCa2Ta2O6O
MnManganese
Mn Tantalite-(Mn)Mn2+Ta2O6
FeIron
Fe Columbite-(Fe)Fe2+Nb2O6
Fe SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
ZrZirconium
Zr ZirconZr(SiO4)
NbNiobium
Nb Columbite-(Fe)Fe2+Nb2O6
Nb Fluorcalciomicrolite(Ca,Na)2(Ta,Nb)2O6F
TaTantalum
Ta Tantalite-(Mn)Mn2+Ta2O6
Ta Microlite GroupA2-mTa2X6-wZ-n
Ta Fluorcalciomicrolite(Ca,Na)2(Ta,Nb)2O6F
Ta OxycalciomicroliteCa2Ta2O6O

Other Regions, Features and Areas containing this locality

Brazil
South AmericaContinent
South America 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

 
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