Physical characteristics: Smooth sand blasted exterior and saw-cut, exposed interior show a cumulate intermingling of cream-colored plagioclase grains and vivid-green pyroxene grains. …

An achondrite[1] is a stony meteorite that does not contain chondrules. [2][3] It consists of material similar to terrestrial basalts or plutonic rocks and has been differentiated and reprocessed to a …

Achondrites are stony meteorites lacking chondrules. They are derived from the crusts of planetary bodies or very large asteroids such as Vesta, and were violently torn away from their …

Cut and polished face of a sample of the Millbillillie eucrite, a basaltic achondrite of the HED family probably derived from asteroid 4-Vesta. White areas are plagioclase, and grey areas are …

Cross-polarised light images of three HED achondrite meteorites. The different colours represent different minerals. Grey crystals are feldspar, beige ones are orthopyroxene, and brightly …

The achondrites include. lunar meteorites; martian meteorites; HED meteorites; primitive achondrites; For detailed information on achondrites and their classification, click here. Click …

2025年1月18日 · Johnstown meteorite Sawed and polished section of a fragment of the Johnstown meteorite, an achondrite that was seen to fall July 6, 1924, in Colorado. The …

This eucrite has been broken open, revealing the distinction between its black, shiny, and smooth fusion crust and its light-colored interior. The specimen is about 7 centimeters from left to right. …

achondrite, any stony meteorite containing no chondrule s (small, roughly spherical objects that formed in the solar nebula). The only exclusions are carbonaceous chondrite s of the CI group, …

Only 6.9% of stony meteorites are achondrites. The achondrites include eucrites (35%), ureilites (14%), diogenites (13%), howardites (10%), lunar (10%), martian (6%), and some rare …