![Minerals in rock sections; the practical methods of identifying minerals in rock sections with the microscope, especially arranged for students in technical and scientific schools . Fig. 70. — Plagioclase, showing narrow Minerals in rock sections; the practical methods of identifying minerals in rock sections with the microscope, especially arranged for students in technical and scientific schools . Fig. 70. — Plagioclase, showing narrow](https://c8.alamy.com/comp/2AXH4E5/minerals-in-rock-sections-the-practical-methods-of-identifying-minerals-in-rock-sections-with-the-microscope-especially-arranged-for-students-in-technical-and-scientific-schools-fig-70-plagioclase-showing-narrow-lamellre-in-diabase-from-cohen-the-basic-than-in-the-acid-series-when-this-twinning-fails-how-ever-as-in-the-basic-plagioclases-in-certain-metamorphic-rocks-thedetermination-becomes-very-difficult-in-some-cases-polysynthetictwinning-after-both-albitc-and-pericline-laws-may-take-place-atthe-same-time-erivingf-rise-to-a-structure-somewhat-similar-to-that-fig-71-2AXH4E5.jpg)
Minerals in rock sections; the practical methods of identifying minerals in rock sections with the microscope, especially arranged for students in technical and scientific schools . Fig. 70. — Plagioclase, showing narrow
![Cretaceous aged Plagioclase Feldspar in dacite from Montana with moderate oscillatory zoning. x10 | Geology rocks, Mineralogy, Geology Cretaceous aged Plagioclase Feldspar in dacite from Montana with moderate oscillatory zoning. x10 | Geology rocks, Mineralogy, Geology](https://i.pinimg.com/originals/c6/33/f9/c633f9f4ee5206cb35130b3524f623c7.jpg)
Cretaceous aged Plagioclase Feldspar in dacite from Montana with moderate oscillatory zoning. x10 | Geology rocks, Mineralogy, Geology
![Role of micropores, mass transfer, and reaction rate in the hydrothermal alteration process of plagioclase in a granitic pluton Role of micropores, mass transfer, and reaction rate in the hydrothermal alteration process of plagioclase in a granitic pluton](https://www.degruyter.com/document/doi/10.2138/am-2019-6786/asset/graphic/j_am-2019-6786_fig_002.jpg)