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Ivuna meteorite, Songwe Region, Tanzania i
Regional Level Types
Ivuna meteorite Meteorite Fall Location
Songwe Region Region
Tanzania Country

Regional Level Types
Ivuna meteorite	Meteorite Fall Location
Songwe Region	Region
Tanzania	Country

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Smectite Group, etc.

Ivuna meteorite, Songwe Region, Tanzania

Smectite Group, etc.

Ivuna meteorite, Songwe Region, Tanzania

Smectite Group, etc.

Ivuna meteorite, Songwe Region, Tanzania

Latitude & Longitude (WGS84):

8° 25' 0'' South , 32° 25' 59'' East

Latitude & Longitude (decimal):

-8.41667,32.43333

GRN:

S06E23

Type:

Meteorite Fall Location

Meteorite Class:

CI1 chondrite meteorite

Meteoritical Society Class:

CI1

Metbull:

View entry in Meteoritical Bulletin Database

Deposit first discovered:

1938

Köppen climate type:

Aw : Tropical savanna, wet

Nearest Settlements:

Place	Population	Distance
Laela	19,185 (2018)	45.3km

Mindat Locality ID:

252950

Long-form identifier:

mindat:1:2:252950:2

GUID (UUID V4):

The Ivuna (CI1) meteorite fell on 16 Dec 1938. A single stone of 704.5 g was recovered of the 2 or 3 which fell. Ivuna is the prototype for the CI (Ivuna-like) Carbonaceous Chondrites. It is one of 5 known CI falls and 4 CI finds. At the present time all 9 CI chondrites are classified as having petrologic type CI1.

Like all carbonaceous chondrite, Ivuna and other CI carbonaceous chondrites have nearly solar Mg/Si ratios and similar oxygen isotope ratios. In addition, Ivuna and other members of the CI chemical group are distinguished by the absence of chondrules and a high degree of hydration.

Because of Ivuna’s very small mass, other more massive CI1 falls (such as Orgueil) are more frequently utilized for research.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

18 valid minerals.

Meteorite/Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

ⓘ CI1 chondrite meteorite

Detailed Mineral List:

ⓘ Blödite

Formula: Na₂Mg(SO₄)₂ · 4H₂O

References:

Mason, Brian (1962) Meteorites. John Wiley and Sons, Inc.: New York & London, 274 pages.

ⓘ Calcite

Formula: CaCO₃

References:

Endress, M., Bischoff, A. (1993) Mineralogy, Degree of Brecciation, and Aqueous Alteration of CI Chondrites Orgueil, Ivuna, and Alais. Meteoritics: 28(3): 345-346.

ⓘ Chromite

Formula: Fe²⁺Cr³⁺₂O₄

References:

Endress, M., Bischoff, A. (1993) Mineralogy, Degree of Brecciation, and Aqueous Alteration of CI Chondrites Orgueil, Ivuna, and Alais. Meteoritics: 28(3): 345-346.

ⓘ Cubanite

Formula: CuFe₂S₃

References:

Kerridge, J.F., Macdougall, J.D., Marti, K. (1979) Clues to the origin of sulfide minerals in CI chondrites. Earth and Planetary Science Letters, 43 (3) 359-367 doi:10.1016/0012-821x(79)90091-8

ⓘ Diamond

Formula: C

References:

GARVIE, Laurence A. J., BUSECK, Peter R. (2007) Prebiotic carbon in clays from Orgueil and Ivuna (CI), and Tagish Lake (C2 ungrouped) meteorites. Meteoritics & Planetary Science, 42 (12) 2111-2117 doi:10.1111/j.1945-5100.2007.tb01011.x

ⓘ Dolomite

Formula: CaMg(CO₃)₂

References:

Mason, Brian (1962) Meteorites. John Wiley and Sons, Inc.: New York & London, 274 pages.

ⓘ Epsomite

Formula: MgSO₄ · 7H₂O

References:

Wood, John A. (1977) Mineralogic and petrologic study of the low-temperature minerals in carbonaceous chondrites. Final Report, Smithsonian Astrophysical Observatory, Cambridge, MA.

ⓘ 'Fayalite-Forsterite Series'

References:

Endress, M., Bischoff, A. (1993) Mineralogy, Degree of Brecciation, and Aqueous Alteration of CI Chondrites Orgueil, Ivuna, and Alais. Meteoritics: 28(3): 345-346.

ⓘ Grossmanite

Formula: CaTi³⁺ AlSiO₆

References:

Frank, D., Zolensky, M., Martinez, J., Mikouchi, T., Ohsumi, K., Hagiya, K., Satake, W., Le, L., Ross, D., Peslier, A. (2011) A CAI in the Ivuna CI1 Chondrite. 42nd Lunar and Planetary Science Conference. LPI Contribution #1608: 2785.

ⓘ Gypsum

Formula: CaSO₄ · 2H₂O

References:

Wood, John A. (1977) Mineralogic and petrologic study of the low-temperature minerals in carbonaceous chondrites. Final Report, Smithsonian Astrophysical Observatory, Cambridge, MA.

ⓘ Ilmenite

Formula: Fe²⁺TiO₃

References:

Endress, M., Bischoff, A. (1993) Mineralogy, Degree of Brecciation, and Aqueous Alteration of CI Chondrites Orgueil, Ivuna, and Alais. Meteoritics: 28(3): 345-346.

ⓘ Magnesite

Formula: MgCO₃

References:

Endress, M., Bischoff, A. (1993) Mineralogy, Degree of Brecciation, and Aqueous Alteration of CI Chondrites Orgueil, Ivuna, and Alais. Meteoritics: 28(3): 345-346.

ⓘ Magnesite var. Breunnerite

Formula: (Mg,Fe)CO₃

References:

Endress, M., Bischoff, A. (1993) Mineralogy, Degree of Brecciation, and Aqueous Alteration of CI Chondrites Orgueil, Ivuna, and Alais. Meteoritics: 28(3): 345-346.

ⓘ Magnetite

Formula: Fe²⁺Fe³⁺₂O₄

References:

Brearley, Adrian J. (1992) Mineralogy of fine-grained matrix in the Ivuna CI Carbonaceous Chondrite. Lunar and Planetary Science Conference 1992.

ⓘ 'Melilite Group'

Formula: Ca₂M(XSiO₇)

References:

ⓘ Pentlandite

Formula: (Ni_xFe_y)_Σ9S₈

References:

Brearley, Adrian J. (1992) Mineralogy of fine-grained matrix in the Ivuna CI Carbonaceous Chondrite. Lunar and Planetary Science Conference 1992.

ⓘ 'Pyroxene Group'

Formula: ADSi₂O₆

References:

Endress, M., Bischoff, A. (1993) Mineralogy, Degree of Brecciation, and Aqueous Alteration of CI Chondrites Orgueil, Ivuna, and Alais. Meteoritics: 28(3): 345-346.

ⓘ Pyrrhotite

Formula: Fe_1-xS

References:

Kerridge, J.F., Macdougall, J.D., Marti, K. (1979) Clues to the origin of sulfide minerals in CI chondrites. Earth and Planetary Science Letters, 43 (3) 359-367 doi:10.1016/0012-821x(79)90091-8

ⓘ Saponite

Formula: Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O

References:

Brearley, Adrian J. (1992) Mineralogy of fine-grained matrix in the Ivuna CI Carbonaceous Chondrite. Lunar and Planetary Science Conference 1992.

ⓘ 'Serpentine Subgroup'

Formula: D₃[Si₂O₅](OH)₄

References:

Brearley, Adrian J. (1992) Mineralogy of fine-grained matrix in the Ivuna CI Carbonaceous Chondrite. Lunar and Planetary Science Conference 1992.

ⓘ Siderite

Formula: FeCO₃

References:

Brearley, A.J., Jones, R.H. (1998) Chondritic Meteorites. In: Planetary Materials (Papike, J. J., Editor): Chapter 3, 398 pages. Mineralogical Society of America: Washington, DC, USA.

ⓘ 'Smectite Group'

Formula: A_0.3D_2-3[T₄O₁₀]Z₂ · nH₂O

References:

Brearley, Adrian J. (1992) Mineralogy of fine-grained matrix in the Ivuna CI Carbonaceous Chondrite. Lunar and Planetary Science Conference 1992.

ⓘ Spinel

Formula: MgAl₂O₄

References:

ⓘ Troilite

Formula: FeS

References:

Mason, Brian (1962) Meteorites. John Wiley and Sons, Inc.: New York & London, 274 pages.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘ	Diamond	1.CB.10a	C
Group 2 - Sulphides and Sulfosalts
ⓘ	Pentlandite	2.BB.15	(Ni_xFe_y)_Σ9S₈
ⓘ	Cubanite	2.CB.55a	CuFe₂S₃
ⓘ	Pyrrhotite	2.CC.10	Fe_1-xS
ⓘ	Troilite	2.CC.10	FeS
Group 4 - Oxides and Hydroxides
ⓘ	Chromite	4.BB.05	Fe²⁺Cr³⁺₂O₄
ⓘ	Magnetite	4.BB.05	Fe²⁺Fe³⁺₂O₄
ⓘ	Spinel	4.BB.05	MgAl₂O₄
ⓘ	Ilmenite	4.CB.05	Fe²⁺TiO₃
Group 5 - Nitrates and Carbonates
ⓘ	Calcite	5.AB.05	CaCO₃
ⓘ	Magnesite	5.AB.05	MgCO₃
ⓘ	Siderite	5.AB.05	FeCO₃
ⓘ	Magnesite var. Breunnerite	5.AB.05	(Mg,Fe)CO₃
ⓘ	Dolomite	5.AB.10	CaMg(CO₃)₂
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘ	Epsomite	7.CB.40	MgSO₄ · 7H₂O
ⓘ	Blödite	7.CC.50	Na₂Mg(SO₄)₂ · 4H₂O
ⓘ	Gypsum	7.CD.40	CaSO₄ · 2H₂O
Group 9 - Silicates
ⓘ	Grossmanite	9.DA.15	CaTi³⁺ AlSiO₆
ⓘ	Saponite	9.EC.45	Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O
Unclassified
ⓘ	'Fayalite-Forsterite Series'	-
ⓘ	'Pyroxene Group'	-	ADSi₂O₆
ⓘ	'Smectite Group'	-	A_0.3D_2-3[T₄O₁₀]Z₂ · nH₂O
ⓘ	'Serpentine Subgroup'	-	D₃[Si₂O₅](OH)₄
ⓘ	'Melilite Group'	-	Ca₂M(XSiO₇)

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Blödite	Na₂Mg(SO₄)₂ · 4H₂O
H	ⓘ Epsomite	MgSO₄ · 7H₂O
H	ⓘ Gypsum	CaSO₄ · 2H₂O
H	ⓘ Saponite	Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O
H	ⓘ Smectite Group	A_0.3D_2-3[T₄O₁₀]Z₂ · nH₂O
H	ⓘ Serpentine Subgroup	D₃[Si₂O₅](OH)₄
C	Carbon
C	ⓘ Calcite	CaCO₃
C	ⓘ Diamond	C
C	ⓘ Dolomite	CaMg(CO₃)₂
C	ⓘ Magnesite	MgCO₃
C	ⓘ Siderite	FeCO₃
C	ⓘ Magnesite var. Breunnerite	(Mg,Fe)CO₃
O	Oxygen
O	ⓘ Blödite	Na₂Mg(SO₄)₂ · 4H₂O
O	ⓘ Calcite	CaCO₃
O	ⓘ Chromite	Fe²⁺Cr₂³⁺O₄
O	ⓘ Dolomite	CaMg(CO₃)₂
O	ⓘ Epsomite	MgSO₄ · 7H₂O
O	ⓘ Gypsum	CaSO₄ · 2H₂O
O	ⓘ Ilmenite	Fe²⁺TiO₃
O	ⓘ Magnesite	MgCO₃
O	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
O	ⓘ Saponite	Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O
O	ⓘ Siderite	FeCO₃
O	ⓘ Spinel	MgAl₂O₄
O	ⓘ Magnesite var. Breunnerite	(Mg,Fe)CO₃
O	ⓘ Fayalite-Forsterite Series
O	ⓘ Pyroxene Group	ADSi₂O₆
O	ⓘ Smectite Group	A_0.3D_2-3[T₄O₁₀]Z₂ · nH₂O
O	ⓘ Serpentine Subgroup	D₃[Si₂O₅](OH)₄
O	ⓘ Melilite Group	Ca₂M(XSiO₇)
O	ⓘ Grossmanite	CaTi³⁺ AlSiO₆
Na	Sodium
Na	ⓘ Blödite	Na₂Mg(SO₄)₂ · 4H₂O
Mg	Magnesium
Mg	ⓘ Blödite	Na₂Mg(SO₄)₂ · 4H₂O
Mg	ⓘ Dolomite	CaMg(CO₃)₂
Mg	ⓘ Epsomite	MgSO₄ · 7H₂O
Mg	ⓘ Magnesite	MgCO₃
Mg	ⓘ Saponite	Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O
Mg	ⓘ Spinel	MgAl₂O₄
Mg	ⓘ Magnesite var. Breunnerite	(Mg,Fe)CO₃
Mg	ⓘ Fayalite-Forsterite Series
Al	Aluminium
Al	ⓘ Saponite	Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O
Al	ⓘ Spinel	MgAl₂O₄
Al	ⓘ Grossmanite	CaTi³⁺ AlSiO₆
Si	Silicon
Si	ⓘ Saponite	Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O
Si	ⓘ Fayalite-Forsterite Series
Si	ⓘ Pyroxene Group	ADSi₂O₆
Si	ⓘ Serpentine Subgroup	D₃[Si₂O₅](OH)₄
Si	ⓘ Melilite Group	Ca₂M(XSiO₇)
Si	ⓘ Grossmanite	CaTi³⁺ AlSiO₆
S	Sulfur
S	ⓘ Blödite	Na₂Mg(SO₄)₂ · 4H₂O
S	ⓘ Cubanite	CuFe₂S₃
S	ⓘ Epsomite	MgSO₄ · 7H₂O
S	ⓘ Gypsum	CaSO₄ · 2H₂O
S	ⓘ Pentlandite	(Ni_xFe_y)_Σ9S₈
S	ⓘ Pyrrhotite	Fe_1-xS
S	ⓘ Troilite	FeS
Ca	Calcium
Ca	ⓘ Calcite	CaCO₃
Ca	ⓘ Dolomite	CaMg(CO₃)₂
Ca	ⓘ Gypsum	CaSO₄ · 2H₂O
Ca	ⓘ Saponite	Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O
Ca	ⓘ Melilite Group	Ca₂M(XSiO₇)
Ca	ⓘ Grossmanite	CaTi³⁺ AlSiO₆
Ti	Titanium
Ti	ⓘ Ilmenite	Fe²⁺TiO₃
Ti	ⓘ Grossmanite	CaTi³⁺ AlSiO₆
Cr	Chromium
Cr	ⓘ Chromite	Fe²⁺Cr₂³⁺O₄
Fe	Iron
Fe	ⓘ Chromite	Fe²⁺Cr₂³⁺O₄
Fe	ⓘ Cubanite	CuFe₂S₃
Fe	ⓘ Ilmenite	Fe²⁺TiO₃
Fe	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
Fe	ⓘ Pentlandite	(Ni_xFe_y)_Σ9S₈
Fe	ⓘ Pyrrhotite	Fe_1-xS
Fe	ⓘ Saponite	Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O
Fe	ⓘ Siderite	FeCO₃
Fe	ⓘ Troilite	FeS
Fe	ⓘ Magnesite var. Breunnerite	(Mg,Fe)CO₃
Fe	ⓘ Fayalite-Forsterite Series
Ni	Nickel
Ni	ⓘ Pentlandite	(Ni_xFe_y)_Σ9S₈
Cu	Copper
Cu	ⓘ Cubanite	CuFe₂S₃

Other Regions, Features and Areas containing this locality

AfricaContinent

East African Rift System (EARS)Zone (Tectonic)
- Albertine RiftZone (Tectonic)

African PlateTectonic Plate

East African Rift
- East African Rift-westNarrow Rift
Rukwa Rift basinBasin

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

Mason, Brian (1962) Meteorites. John Wiley and Sons, Inc.: New York & London, 274 pages.

Wood, John A. (1977) Mineralogic and petrologic study of the low-temperature minerals in carbonaceous chondrites. Final Report, Smithsonian Astrophysical Observatory, Cambridge, Massachusetts.

Kerridge, J.F., Macdougall, J.D., Marti, K. (1979) Clues to the origin of sulfide minerals in CI chondrites. Earth and Planetary Science Letters, 43 (3) 359-367 doi:10.1016/0012-821x(79)90091-8

Brearley, Adrian J. (1992) Mineralogy of fine-grained matrix in the Ivuna CI Carbonaceous Chondrite. Lunar and Planetary Science Conference 1992.

Endress, M., Bischoff, A. (1993) Mineralogy, Degree of Brecciation, and Aqueous Alteration of CI Chondrites Orgueil, Ivuna, and Alais. Meteoritics: 28(3): 345-346.

Brearley, A.J., Jones, R.H. (1998) Chondritic Meteorites. In: Planetary Materials (Papike, J. J., Editor): Chapter 3, 398 pages. Mineralogical Society of America: Washington, DC, USA.

Grady, Monica (2000) Catalogue of Meteorites (5th ed.). Cambridge University Press.

Frank, D., M. Zolensky, J. Martinez, T. Mikouchi, K. Ohsumi, K. Hagiya, W. Satake, L. Le, D. Ross & A. Peslier (2011) A CAI in the Ivuna CI1 Chondrite. 42nd Lunar and Planetary Science Conference. LPI Contribution #1608, p. 2785.

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Ivuna meteorite, Songwe Region, TanzaniaiRegional Level TypesIvuna meteoriteMeteorite Fall Location Songwe RegionRegion TanzaniaCountry function showexplain() { $("#locexplain").toggle(); if (typeof movemap === "function") movemap(); }

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Mineral List

Meteorite/Rock Types Recorded

Select Rock List Type

Detailed Mineral List:

Gallery:

List of minerals arranged by Strunz 10th Edition classification

List of minerals for each chemical element

Other Regions, Features and Areas containing this locality

References

Ivuna meteorite, Songwe Region, Tanzania i
Regional Level Types
Ivuna meteorite Meteorite Fall Location
Songwe Region Region
Tanzania Country