Description

A compilation of four datasets listed in Aitchison (2003)

Each type of rock has 25 observations – to use only a certain type of rock, see “Details”.

Usage

Format

A data frame with 100 observations on the following 8 variables.

Albite, Blandite, Cornite, Daubite, Endite

numeric vectors

depth

a numeric vector

porosity

a numeric vector

type

a factor with levels Boxite Coxite Hongite Kongite

Source

Aitchison, J. (2003). The Statistical Analysis of Compositional Data. The Blackburn Press, Caldwell, NJ.