AEROLITES

Cathodoluminescence (CL-OM)
Cathodoluminescence (CL-OM)

Zeiss Axio Imager Optical Microscope - CITL MK5-2 Cathode Ray Source 15KeV - 0.7mA The predominance of the blue color emitted by minerals due to the incidence of an electron beam indicates an advanced petrographic type due to thermal metamorphism. Image Credits: Amanda Tosi

Zeiss Discovery V8 Optical Stereomicroscope
Zeiss Discovery V8 Optical Stereomicroscope

Low chondritic texture, typical of petrographic type 5, according to Van Schumus & Wood (1967). Image Credit: M.E. Zucolotto

Zeiss Axioplan Optical Microscope
Zeiss Axioplan Optical Microscope

Transmitted and Polarized Light Image Credits: M.E.Zucolotto

Cathodoluminescence (CL-OM)
Cathodoluminescence (CL-OM)

Zeiss Axio Imager Optical Microscope - CITL MK5-2 Cathode Ray Source 15KeV - 0.7mA The predominance of the blue color emitted by minerals due to the incidence of an electron beam indicates an advanced petrographic type due to thermal metamorphism. Image Credits: Amanda Tosi

1/6

Stony

TIPO:

CLASSE:

CLAN:

GRUPO:

TIPO PET.:

EST. CHOQUE:

INTEMPERISM0:

PAÍS:

ANO:

A/Q

CHONDRITE

ORDINARY

H-L-LL

H

5

S3

W0

BOLIVIA

2016

FALL

Chondritic texture and mineral composition of an equilibrated ordinary chondite. Chemical and petrological type is H5. Shock stage S3 and weathering W0.

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Cathodoluminescence (CL-OM)
Cathodoluminescence (CL-OM)

Zeiss Axio Imager Optical Microscope - CITL MK5-2 Cathode Ray Source 15KeV - 0.7mA Image Credit: Amanda Tosi

Jeol JXA8230 Electron Microprobe
Jeol JXA8230 Electron Microprobe

Backscattered electron image (compo) 15KeV - 20nA Image Credit: Amanda Tosi

Cathodoluminescence (CL-OM)
Cathodoluminescence (CL-OM)

Optical Microscope 15KeV - 0.7mA Chondrues with pyroxene and olivine grains emitting red color CL. The dark grain present in the chondrule is a graphite grain. Image Credit: Amanda Tosi

Cathodoluminescence (CL-OM)
Cathodoluminescence (CL-OM)

Zeiss Axio Imager Optical Microscope - CITL MK5-2 Cathode Ray Source 15KeV - 0.7mA Image Credit: Amanda Tosi

1/5

Stony

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CHONDRITE

ORDINARY

H-L-LL

LL

3.15

S4

W0

INDIA

1895

FALL

Unequilibrated Ordinary Chondrite LL 3.15, Shock Stage S4, Weathering Stage W0.

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Cathodoluminescence (CL-OM)
Cathodoluminescence (CL-OM)

Zeiss Axio Imager Optical Microscope - CITL MK5-2 Cathode Ray Source 15KeV - 0.7mA The lack of yellow in the mesostasis of the chondrules and the dull red, as well as the dark matrix and little predominance of blue, classifies the Chainpur meteorite as a petrographic type 3 of the most primitive, but with evidence of a mild thermal metamorphism. Image Credit: Amanda Tosi

Cathodoluminescence (CL-OM)
Cathodoluminescence (CL-OM)

Zeiss Axio Imager Optical Microscope - CITL MK5-2 Cathode Ray Source 15KeV - 0.7mA Condrule with blue mesostasis indicating to be more albitic than anortitic and grains of olivine and pyroxene presenting dull red color, indicative of poor Fe2+ silicates in the composition (since it acts as a CL suppressor). Image Credit: Amanda Tosi

Jeol JXA8230 Electron Microprobe
Jeol JXA8230 Electron Microprobe

Backscattered electron image (compo) 15KeV - 20nA Image Credit: Amanda Tosi

Cathodoluminescence (CL-OM)
Cathodoluminescence (CL-OM)

Zeiss Axio Imager Optical Microscope - CITL MK5-2 Cathode Ray Source 15KeV - 0.7mA The lack of yellow in the mesostasis of the chondrules and the dull red, as well as the dark matrix and little predominance of blue, classifies the Chainpur meteorite as a petrographic type 3 of the most primitive, but with evidence of a mild thermal metamorphism. Image Credit: Amanda Tosi

1/3

Stony

TIPO:

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TIPO PET.:

EST. CHOQUE:

INTEMPERISM0:

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ANO:

A/Q

CHONDRITE

ORDINARY

H-L-LL

LL

3.4

S1

-

INDIA

1907

FALL

Unequilibrated Ordinary Chondrite LL 3.4, Shock Stage S1

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Zeiss Discovery V8 Optical Stereomicroscope
Zeiss Discovery V8 Optical Stereomicroscope

Small fragment of the Angra dos Reis meteorite. Image Credit: Amanda Tosi

Photographic camera
Photographic camera

Fragment of the Angra dos Reis meteorite with its wrinkled, dark and shiny fusion crust. Image Credit: M. E. Zucolotto

Photographic camera
Photographic camera

Fragment of the Angra dos Reis meteorite with its melting crust. Image Credit: André Moutinho

Zeiss Discovery V8 Optical Stereomicroscope
Zeiss Discovery V8 Optical Stereomicroscope

Small fragment of the Angra dos Reis meteorite. Image Credit: Amanda Tosi

1/4

Stony

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ACHONDRITE

-

-

-

-

-

-

BRAZIL - RJ

1869

FALL

Fassaite Achondrite. The Angra dos Reis meteorite is an ultramafic igneous rock or pyroxenite because it is made up of 93% pyroxene. Properly referred to as a Fassaite.

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Cathodoluminescence (CL-OM)
Cathodoluminescence (CL-OM)

Zeiss Axio Imager Optical Microscope - CITL MK5-2 Cathode Ray Source 15KeV - 0.7mA The presence of red and yellow colors in the chondrules and dark matrix without luminescence indicates that the meteorite suffered mild thermal metamorphism, thus belonging to a petrographic type between 3.0 to 3.4. Image Credits: R. N. Salaverry and A. A. Tosi

Jeol JXA8230 Electron Microprobe
Jeol JXA8230 Electron Microprobe

Bacscattered image (compo) 15Kev - 20nA Olivine with a heterogeneous chemical border, typical of primitive meteorites, without thermal metamorphism. Image Credit: A.A. Tosi

Zeiss Axioplan Optical Microscope
Zeiss Axioplan Optical Microscope

Transmitted Light Image Credit: R. N. Salaverry

Cathodoluminescence (CL-OM)
Cathodoluminescence (CL-OM)

Zeiss Axio Imager Optical Microscope - CITL MK5-2 Cathode Ray Source 15KeV - 0.7mA The presence of red and yellow colors in the chondrules and dark matrix without luminescence indicates that the meteorite suffered mild thermal metamorphism, thus belonging to a petrographic type between 3.0 to 3.4. Image Credits: R. N. Salaverry and A. A. Tosi

1/4

Stony

TIPO:

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EST. CHOQUE:

INTEMPERISM0:

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A/Q

CHONDRITE

ORDINARY

H-L-LL

LL

3.2

S3

W1

BRAZIL - SP

1967

FALL

Chondritic texture and mineral composition of an unequilibrated ordinary chondrite of the chemical and petrographic type LL3.2. Shock stage S3 and weathering W1.

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Photographic Camera
Photographic Camera

Meteorite fragment Conquest with the thin melting crust on its surface. Image Credit: André Moutinho

Photographic Camera
Photographic Camera

Meteorite fragment Conquest with the thin melting crust on its surface. Image Credit: André Moutinho

1/1

Stony

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CHONDRITE

ORDINARY

H-L-LL

H

4

-

W1 or more

BRAZIL - MG

1965

FALL

Equilibrated Ordinary Chondrite H4, slightly weathered by terrestrial oxidation.

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Zeiss Discovery V8 Optical Stereomicroscope
Zeiss Discovery V8 Optical Stereomicroscope

Transmitted Light Image credit: Amanda Tosi

Zeiss Discovery V8 Optical Stereomicroscope
Zeiss Discovery V8 Optical Stereomicroscope

Transmitted and Polarized Light Image Credit: Amanda Tosi

Photographic camera
Photographic camera

Avanhandava meteorite fragment showing the melting crust on the surface and its rocky interior with chondritic texture. Image Credit: M. E. Zucolotto

Zeiss Discovery V8 Optical Stereomicroscope
Zeiss Discovery V8 Optical Stereomicroscope

Transmitted Light Image credit: Amanda Tosi

1/5

Stony

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CHONDRITE

ORDINARY

H-L-LL

H

4

-

-

BRAZIL - SP

1952

FALL

Equilibrated Ordinary Chondrite H4

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Zeiss Discovery V8 Optical Stereomicroscope
Zeiss Discovery V8 Optical Stereomicroscope

Transmitted Light It is possible to notice its scarcely chondridic texture, typical of type 5, and few metals (black regions) bordered by iron oxide, due to terrestrial weathering. Image Credit: Amanda Tosi

Zeiss Discovery V8 Optical Stereomicroscope
Zeiss Discovery V8 Optical Stereomicroscope

Transmitted and Polarized Light Image Credit: Amanda Tosi

Photographic camera
Photographic camera

Fragments of the Campo Sales meteorite. Image Credit: M. E. Zucolotto

Zeiss Discovery V8 Optical Stereomicroscope
Zeiss Discovery V8 Optical Stereomicroscope

Transmitted Light It is possible to notice its scarcely chondridic texture, typical of type 5, and few metals (black regions) bordered by iron oxide, due to terrestrial weathering. Image Credit: Amanda Tosi

1/4

Stony

TIPO:

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CLAN:

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INTEMPERISM0:

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ANO:

A/Q

CHONDRITE

ORDINARY

H-L-LL

L

5

S1

W0-1

BRAZIL - CE

1991

FALL

The meteorite is an ordinary chondrite L5 with slight shock stage S1.

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Photographic Camera
Photographic Camera

Fragment of the Martian meteorite of the Naklite type, Governador Valadares. Image Credit: Norbert Classen (IMCA website)

Photographic Camera
Photographic Camera

Fragment of the Martian meteorite of the Naklite type, Governador Valadares. Image Credit: Norbert Classen (IMCA website)

1/1

Stony

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ACHONDRITE

MARTIAN

SNC

NAKHLITE

-

S4

BRAZIL - MG

1958

FIND

Governador Valadares is an Augite-Olivine Achondrite, classified as Nakhlite belonging to the SCN clan, which are meteorites from the planet Mars.

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