1 — Rock-forming Minerals, Volume 2,deel

: Discussion of the mineral's occurrence and stability in igneous, metamorphic, and sedimentary environments. Key Data & Significance

(often cited as Volume 2A ) is a definitive reference work by W.A. Deer, R.A. Howie, and J. Zussman (DHZ). The second edition, published in 1978 and reprinted by the Geological Society of London , focuses exclusively on Single-Chain Silicates , primarily the pyroxene group. Core Focus: Single-Chain Silicates Rock-forming minerals, Volume 2,Deel 1

: Data on refractive indices, optic axial angles, and density, often correlated with chemical composition. : Discussion of the mineral's occurrence and stability

: Tabulated chemical analyses, structural formulae, and phase equilibria in relevant systems. Howie, and J

: The second edition was completely rewritten to include over 15 years of new research, growing to 668 pages (three times the length of the first edition).