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Jonas mine (João Pinto mine), Conselheiro Pena, Minas Gerais, Brazili
Regional Level Types
Jonas mine (João Pinto mine)Mine
Conselheiro PenaTown
Minas GeraisState
BrazilCountry

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Key
Latitude & Longitude (WGS84):
19° 11' 53'' South , 41° 26' 36'' West
Latitude & Longitude (decimal):
Locality type:
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Conselheiro Pena12,734 (2012)4.2km
Resplendor15,131 (2012)24.3km
Divino das Laranjeiras9,058 (2012)46.9km


This is a gem mine discovered in 1977 in lithium pegmatite of the Conselheira Pena pegmatite district, Eastern Brazilian Pegmatite Province. It is most famous for its red elbaite (rubellite). A single pocket (miarolitic cavity) of about 2 x 2.5 x 3 meters yielded 3.6 tons of high-quality rubellite crystals, including 200 kg of cutting-quality gem rough, and three of the world's best rubellite crystals, two of about a meter in length that sold for around a million dollars each in 1978. Total production from that pocket would be valued at about $50 million today. In the early 1990s, another pocket yielded large reddish muscovite crystals to several centimeters across, on albite.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


11 valid minerals.

Detailed Mineral List:

Albite
Formula: Na(AlSi3O8)
Reference: Wilson, W E (2012) Famous Mimeral localities: The Jonas Mine, Itatiaia, Minas Gerais, Brazil. Mineralogical Record 43:289-317.
Albite var: Cleavelandite
Formula: Na(AlSi3O8)
Reference: Sauer, J.R. (1982) Brazil, Paradise of Gemstones. Gemological Institute of America, 135 pp. (pp. 48-51).; Wilson, W.E. (2012) Famous Mineral Localities: The Jonas Mine, Itatiaia, Minas Gerais, Brazil. Mineralogical Record, 43, 289-317.
Bertrandite
Formula: Be4(Si2O7)(OH)2
Reference: Wilson, W E (2012) Famous Mimeral localities: The Jonas Mine, Itatiaia, Minas Gerais, Brazil. Mineralogical Record 43:289-317.
Cassiterite
Formula: SnO2
Reference: Wilson, W E (2012) Famous Mimeral localities: The Jonas Mine, Itatiaia, Minas Gerais, Brazil. Mineralogical Record 43:289-317.
Elbaite
Formula: Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Reference: Wilson, W E (2012) Famous Mimeral localities: The Jonas Mine, Itatiaia, Minas Gerais, Brazil. Mineralogical Record 43:289-317.
Fluorapatite
Formula: Ca5(PO4)3F
Reference: Wilson, W E (2012) Famous Mimeral localities: The Jonas Mine, Itatiaia, Minas Gerais, Brazil. Mineralogical Record 43:289-317.
'Lepidolite'
Reference: Wilson, W E (2012) Famous Mimeral localities: The Jonas Mine, Itatiaia, Minas Gerais, Brazil. Mineralogical Record 43:289-317.
Microcline
Formula: K(AlSi3O8)
Reference: Van King; Wilson, W E (2012) Famous Mimeral localities: The Jonas Mine, Itatiaia, Minas Gerais, Brazil. Mineralogical Record 43:289-317.
'Microlite Group'
Formula: A2-mTa2X6-wZ-n
Reference: Wilson, W E (2012) Famous Mimeral localities: The Jonas Mine, Itatiaia, Minas Gerais, Brazil. Mineralogical Record 43:289-317.
'Monazite'
Reference: Wilson, W E (2012) Famous Mimeral localities: The Jonas Mine, Itatiaia, Minas Gerais, Brazil. Mineralogical Record 43:289-317.
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: P Haas collection; Wilson, W E (2012) Famous Mimeral localities: The Jonas Mine, Itatiaia, Minas Gerais, Brazil. Mineralogical Record 43:289-317.
Muscovite var: Sericite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Wilson, W E (2012) Famous Mimeral localities: The Jonas Mine, Itatiaia, Minas Gerais, Brazil. Mineralogical Record 43:289-317.
Quartz
Formula: SiO2
Reference: Sauer, J.R. (1982) Brazil, Paradise of Gemstones. Gemological Institute of America, 135 pp. (pp. 50-51).; Wilson, W.E. (2012) Famous Mineral Localities: The Jonas Mine, Itatiaia, Minas Gerais, Brazil. Mineralogical Record, 43, 289-317.
Rossmanite
Formula: ☐(LiAl2)Al6(Si6O18)(BO3)3(OH)3(OH)
Reference: Wilson, W E (2012) Famous Mimeral localities: The Jonas Mine, Itatiaia, Minas Gerais, Brazil. Mineralogical Record 43:289-317.
Spessartine
Formula: Mn2+3Al2(SiO4)3
Reference: Wilson, W E (2012) Famous Mimeral localities: The Jonas Mine, Itatiaia, Minas Gerais, Brazil. Mineralogical Record 43:289-317.
'Tourmaline'
Formula: A(D3)G6(Si6O18)(BO3)3X3Z
Reference: Van King; Wilson, W E (2012) Famous Mimeral localities: The Jonas Mine, Itatiaia, Minas Gerais, Brazil. Mineralogical Record 43:289-317.
'Tourmaline var: Rubellite'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Colour: pink to "pigeon-blood" red
Reference: [www.johnbetts-fineminerals.com]; Sauer, J.R. (1982) Brazil, Paradise of Gemstones. Gemological Institute of America, 135 pp. (pp. 48-51).; Wilson, W.E. (2012) Famous Mineral Localities: The Jonas Mine, Itatiaia, Minas Gerais, Brazil. Mineralogical Record, 43, 289-317.
Trilithionite
Formula: K(Li1.5Al1.5)(AlSi3O10)(F,OH)2
Reference: Wilson, W E (2012) Famous Mimeral localities: The Jonas Mine, Itatiaia, Minas Gerais, Brazil. Mineralogical Record 43:289-317.

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Cassiterite4.DB.05SnO2
'Microlite Group'4.00.A2-mTa2X6-wZ-n
Quartz4.DA.05SiO2
Group 8 - Phosphates, Arsenates and Vanadates
Fluorapatite8.BN.05Ca5(PO4)3F
Group 9 - Silicates
Albite9.FA.35Na(AlSi3O8)
var: Cleavelandite9.FA.35Na(AlSi3O8)
Bertrandite9.BD.05Be4(Si2O7)(OH)2
Elbaite9.CK.05Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Microcline9.FA.30K(AlSi3O8)
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
var: Sericite9.EC.15KAl2(AlSi3O10)(OH)2
Rossmanite9.CK.05☐(LiAl2)Al6(Si6O18)(BO3)3(OH)3(OH)
Spessartine9.AD.25Mn2+3Al2(SiO4)3
Trilithionite9.EC.20K(Li1.5Al1.5)(AlSi3O10)(F,OH)2
Unclassified Minerals, Rocks, etc.
'Lepidolite'-
'Monazite'-
'Tourmaline'-A(D3)G6(Si6O18)(BO3)3X3Z
'var: Rubellite'-A(D3)G6(T6O18)(BO3)3X3Z

List of minerals arranged by Dana 8th Edition classification

Group 4 - SIMPLE OXIDES
AX2
Cassiterite4.4.1.5SnO2
Group 8 - MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
A2B2O6(O,OH,F)
'Microlite Group'8.2.2.1A2-mTa2X6-wZ-n
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
A5(XO4)3Zq
Fluorapatite41.8.1.1Ca5(PO4)3F
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in [6] and >[6] coordination
Spessartine51.4.3a.3Mn2+3Al2(SiO4)3
Group 56 - SOROSILICATES Si2O7 Groups, With Additional O, OH, F and H2O
Si2O7 Groups and O, OH, F, and H2O with cations in [4] coordination
Bertrandite56.1.1.1Be4(Si2O7)(OH)2
Group 61 - CYCLOSILICATES Six-Membered Rings
Six-Membered Rings with borate groups
Elbaite61.3.1.8Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Albite76.1.3.1Na(AlSi3O8)
Microcline76.1.1.5K(AlSi3O8)
Unclassified Minerals, Mixtures, etc.
Albite
var: Cleavelandite
-Na(AlSi3O8)
'Lepidolite'-
'Monazite'-
Muscovite
var: Sericite
-KAl2(AlSi3O10)(OH)2
Rossmanite-☐(LiAl2)Al6(Si6O18)(BO3)3(OH)3(OH)
'Tourmaline'-A(D3)G6(Si6O18)(BO3)3X3Z
'var: Rubellite'-A(D3)G6(T6O18)(BO3)3X3Z
Trilithionite-K(Li1.5Al1.5)(AlSi3O10)(F,OH)2

List of minerals for each chemical element

HHydrogen
H ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
H MuscoviteKAl2(AlSi3O10)(OH)2
H BertranditeBe4(Si2O7)(OH)2
H Rossmanite☐(LiAl2)Al6(Si6O18)(BO3)3(OH)3(OH)
H Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
LiLithium
Li ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Li Rossmanite☐(LiAl2)Al6(Si6O18)(BO3)3(OH)3(OH)
Li TrilithioniteK(Li1.5Al1.5)(AlSi3O10)(F,OH)2
BeBeryllium
Be BertranditeBe4(Si2O7)(OH)2
BBoron
B ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
B Tourmaline (var: Rubellite)A(D3)G6(T6O18)(BO3)3X3Z
B TourmalineA(D3)G6(Si6O18)(BO3)3X3Z
B Rossmanite☐(LiAl2)Al6(Si6O18)(BO3)3(OH)3(OH)
OOxygen
O ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
O AlbiteNa(AlSi3O8)
O Tourmaline (var: Rubellite)A(D3)G6(T6O18)(BO3)3X3Z
O MicroclineK(AlSi3O8)
O QuartzSiO2
O Albite (var: Cleavelandite)Na(AlSi3O8)
O MuscoviteKAl2(AlSi3O10)(OH)2
O TourmalineA(D3)G6(Si6O18)(BO3)3X3Z
O BertranditeBe4(Si2O7)(OH)2
O Rossmanite☐(LiAl2)Al6(Si6O18)(BO3)3(OH)3(OH)
O FluorapatiteCa5(PO4)3F
O CassiteriteSnO2
O SpessartineMn32+Al2(SiO4)3
O Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
O TrilithioniteK(Li1.5Al1.5)(AlSi3O10)(F,OH)2
FFluorine
F FluorapatiteCa5(PO4)3F
F TrilithioniteK(Li1.5Al1.5)(AlSi3O10)(F,OH)2
NaSodium
Na ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Na AlbiteNa(AlSi3O8)
Na Albite (var: Cleavelandite)Na(AlSi3O8)
AlAluminium
Al ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Al AlbiteNa(AlSi3O8)
Al MicroclineK(AlSi3O8)
Al Albite (var: Cleavelandite)Na(AlSi3O8)
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al Rossmanite☐(LiAl2)Al6(Si6O18)(BO3)3(OH)3(OH)
Al SpessartineMn32+Al2(SiO4)3
Al Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Al TrilithioniteK(Li1.5Al1.5)(AlSi3O10)(F,OH)2
SiSilicon
Si ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Si AlbiteNa(AlSi3O8)
Si MicroclineK(AlSi3O8)
Si QuartzSiO2
Si Albite (var: Cleavelandite)Na(AlSi3O8)
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si TourmalineA(D3)G6(Si6O18)(BO3)3X3Z
Si BertranditeBe4(Si2O7)(OH)2
Si Rossmanite☐(LiAl2)Al6(Si6O18)(BO3)3(OH)3(OH)
Si SpessartineMn32+Al2(SiO4)3
Si Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Si TrilithioniteK(Li1.5Al1.5)(AlSi3O10)(F,OH)2
PPhosphorus
P FluorapatiteCa5(PO4)3F
KPotassium
K MicroclineK(AlSi3O8)
K MuscoviteKAl2(AlSi3O10)(OH)2
K Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
K TrilithioniteK(Li1.5Al1.5)(AlSi3O10)(F,OH)2
CaCalcium
Ca FluorapatiteCa5(PO4)3F
MnManganese
Mn SpessartineMn32+Al2(SiO4)3
SnTin
Sn CassiteriteSnO2
TaTantalum
Ta Microlite GroupA2-mTa2X6-wZ-n

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Rocks & Minerals (xxxx) 58, 23.
Rocks & Minerals (xxxx) 59, 276.
Rocks & Minerals (xxxx) 63, 41.
Sauer, J.R. (1982) Brazil, Paradise of Gemstones. Gemological Institute of America, 135 pp. (pp. 48-51).
Morteani, G., Preinfalk, C., and Horn, A.H. (2000) Classification and mineralization potential of the pegmatites of the Eastern Brazilian Pegmatite Province. Mineralium Deposita, 35, 638-655.
Simmons, W.B., Pezzotta, F., Shigley, J.E., and Beurlen, H. (2012) Granitic pegmatites as sources of colored gemstones. Elements, 8, 281-287 (www.elementsmagazine.org/archivearticles/e8_4/e8_4.pdf).
Wilson, W.E. (2012) Famous Mineral Localities: The Jonas Mine, Itatiaia, Minas Gerais, Brazil. Mineralogical Record, 43, 289-317.

Other Regions, Features and Areas containg this locality

South AmericaContinent
South America PlateTectonic Plate

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