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

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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

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Zeiss Axioplan Optical Microscope
Zeiss Axioplan Optical Microscope

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

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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 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

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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

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Jeol JXA8230 Electron Microprobe
Jeol JXA8230 Electron Microprobe

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

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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

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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

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1/5

Stony

TIPO:

CLASSE:

CLAN:

GRUPO:

TIPO PET.:

EST. CHOQUE:

INTEMPERISM0:

PAÍS:

ANO:

A/Q

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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BSE Image by Electron Microprobe
BSE Image by Electron Microprobe

Well-formed plagioclase crystal over 50 microns recrystallized from a glassy matrix. Source: TOSI A.A.

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BSE Image by Electron Microprobe
BSE Image by Electron Microprobe

FeNi metal grains showing oxidation at the edges, indicating terrestrial weathering. Source: TOSI A.A.

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BSE Image by Electron Microprobe
BSE Image by Electron Microprobe

Chondrule poorly defined and showing irregular signs of fracture, caused by shock events, and filled with iron oxide. Source: TOSI A.A.

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BSE Image by Electron Microprobe
BSE Image by Electron Microprobe

Well-formed plagioclase crystal over 50 microns recrystallized from a glassy matrix. Source: TOSI A.A.

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1/4

Stony

TIPO:

CLASSE:

CLAN:

GRUPO:

TIPO PET.:

EST. CHOQUE:

INTEMPERISM0:

PAÍS:

ANO:

A/Q

CHONDRITE

ORDINARY

H-L-LL

H

5

S3/4

W1

BRAZIL - RS

2019

FIND

Ordinário Chondrite L5

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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

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Photographic camera
Photographic camera

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

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Photographic camera
Photographic camera

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

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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

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1/4

Stony

TIPO:

CLASSE:

CLAN:

GRUPO:

TIPO PET.:

EST. CHOQUE:

INTEMPERISM0:

PAÍS:

ANO:

A/Q

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

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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

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Zeiss Axioplan Optical Microscope
Zeiss Axioplan Optical Microscope

Transmitted Light Image Credit: R. N. Salaverry

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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

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1/4

Stony

TIPO:

CLASSE:

CLAN:

GRUPO:

TIPO PET.:

EST. CHOQUE:

INTEMPERISM0:

PAÍS:

ANO:

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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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

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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

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Jeol JXA8230 Electron Microprobe
Jeol JXA8230 Electron Microprobe

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

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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

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1/3

Stony

TIPO:

CLASSE:

CLAN:

GRUPO:

TIPO PET.:

EST. CHOQUE:

INTEMPERISM0:

PAÍS:

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

Transmitted Light Image credit: Amanda Tosi

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Zeiss Discovery V8 Optical Stereomicroscope
Zeiss Discovery V8 Optical Stereomicroscope

Transmitted and Polarized Light Image Credit: Amanda Tosi

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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

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Zeiss Discovery V8 Optical Stereomicroscope
Zeiss Discovery V8 Optical Stereomicroscope

Transmitted Light Image credit: Amanda Tosi

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1/5

Stony

TIPO:

CLASSE:

CLAN:

GRUPO:

TIPO PET.:

EST. CHOQUE:

INTEMPERISM0:

PAÍS:

ANO:

A/Q

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

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Zeiss Discovery V8 Optical Stereomicroscope
Zeiss Discovery V8 Optical Stereomicroscope

Transmitted and Polarized Light Image Credit: Amanda Tosi

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Photographic camera
Photographic camera

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

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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

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1/4

Stony

TIPO:

CLASSE:

CLAN:

GRUPO:

TIPO PET.:

EST. CHOQUE:

INTEMPERISM0:

PAÍS:

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

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

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Photographic Camera
Photographic Camera

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

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1/1

Stony

TIPO:

CLASSE:

CLAN:

GRUPO:

TIPO PET.:

EST. CHOQUE:

INTEMPERISM0:

PAÍS:

ANO:

A/Q

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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