Final answer:
The term 'descabeza' is not commonly associated with rock classification, and without more information about the rock's mineral content, it cannot be accurately classified as mafic, intermediate, or felsic.
Step-by-step explanation:
The term descabeza does not specify a type of rock; it appears to be a typo or an incorrectly used term in this context. However, the classification of a rock as mafic, intermediate, or felsic is based on its mineral content. Mafic rocks are rich in magnesium and iron and typically have dark-colored minerals. Felsic rocks are rich in silica and aluminum, typically having a lighter color due to minerals like quartz and feldspar. Intermediate rocks have a composition between mafic and felsic, often containing minerals like amphibole and plagioclase feldspar.
To accurately determine the composition of a rock sample, observations of the mineral content should be compared to standard geological references or rock and mineral guides. If the rock sample is extrusive (formed from lava at the surface) or intrusive (formed from magma underground), this can provide further clues about the rock's identity, as can information about the regional geology such as the age of other rocks in the area. Without specific information about the mineral content of a rock labeled 'descabeza', a definite classification cannot be provided.