#mineral composition
- Adamellite — A coarse-grained plutonic igneous rock, considered a specific variety of granite or quartz monzonite, in which potassium feldspar and plagioclase feldspar (especially oligoclase or andesine) are present in approximately equal amounts. This crystalline rock also contains abundant quartz and ferromagnesian minerals such as biotite or hornblende, commonly found in ancient mountain massifs.
- Aerolite — A meteorite composed mostly of silicate mineral substances (stony), sometimes exhibiting small metallic inclusions of iron and nickel. This category of celestial bodies that have fallen onto the Earth's surface is structurally divided into chondrites and achondrites, offering fundamental scientific data regarding the early composition of the solar system.
- Agrogeologist — A female specialist in agrogeology; a researcher or specialist who studies the geological structure of soils, the mineralogical composition of parent rocks, and their influence on land fertility and plant development. She applies knowledge of geophysics and geochemistry to identify natural mineral resources useful for the structural improvement of degraded soils.
- Agrogeologist — A specialist in agrogeology; a researcher or engineer who studies the geological structure of soils, their genesis from parent rocks, and the influence of mineral composition on land fertility. This professional analyzes the geochemical and mineralogical properties of the terrestrial substratum to recommend natural amendments and optimal conservation methods for arable soils.
- Andesite — An effusive (volcanic) igneous rock with a microlitic or porphyritic texture, gray, brown, or greenish in color, mainly composed of plagioclase feldspar (such as andesine) and ferromagnesian minerals (amphiboles, pyroxenes, or biotite). It has a wide distribution in eruption areas and is intensely used in construction as dimension stone, paving, gravel, or structural aggregate due to its hardness.