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

Transmitted and Polarized Light The dark circular regions are the vesicles in the Ibitira meteorite. Image Credit: Amanda Tosi

Transmitted Light Image Credit: Amanda Tosi

Fragment of the Ibitira meteorite classified as eucrite from the asteroid Vesta. The most striking feature is the presence of vesicles, almost spherical and uniform, and their no brecciated texture. Image Credit: André Moutinho

Transmitted Light Image Credit: Amanda Tosi

Transmitted and Polarized Light Image Credit: Amanda Tosi

Fragment of the Ipitinga meteorite. The image shows a marked polyhedral shape completely covered by a fusion crust. Its outer surface is pale brown due to the terrestrial climate. The scale is 10 cm long. Source: Dreher et al. (1995). Image Credit: Dreher et al. (1995)

Zeiss Axio Imager Optical Microscope - CITL MK5-2 Cathode Ray Source 15KeV - 0.7mA The lack of yellow and red color, combined with the predominance of blue color and part of the matrix still dark, characterizes the Hadjaz meteorite as the petrographic type 3.7. Image Credit: Amanda Tosi

Backscattered electron image (compo) 15KeV - 20nA The BSE image reveals the chondrid texture of the Hedjaz meteorite. Image Credit: Amanda Tosi

Fragment of the Iguaraçu meteorite showing its scarcely chondritic texture, like the petrographic type 5 by Van Schmus & Wood (1967), and abundance of metals, which classifies it as an Ordinary Chondrite of the chemical H group. Image Credit: André Moutinho

Transmitted and Polarized Light Image Credit: Amanda Tosi

Transmitted Light Image Credit: Amanda Tosi

Fragment of the Itapicuru-Mirim meteorite quite weathered by terrestrial oxidation. Image Credit: M. E. Zucolotto

Transmitted and Polarized Light Image Credit: Amanda Tosi

Reflected Light The lighter crystal is metal (FeNi) with its oxidized matrix, the result of weathering. Image Credit: M. E. Zucolotto

Backscattered electron image (compo) 15KeV - 20nA Growth of plagiocase in the matrix, indicating a high thermal metamorphism stage.   Image Credit: Amanda Tosi

Transmitted and Polarized Light Image Credit: Amanda Tosi

Transmitted Light Image Credit: Amanda Tosi

Transmitted Light It is possible to observe the slightly chondritic texture with the metals (FeNi) in the black regions. Image Credit: Amanda Tosi

Transmitted and Polarized Light Image Credit: Amanda Tosi

Fragment of the Lavras do Sul meteorite showing its scarcely chondritic texture with some regions showing terrestrial weathering. Image Credit: M. E. Zucolotto