Microscopical petrography
By: by Ferdinand Zirkel ...
Series: Report of the Geological Exploration of the Fortieth Parallel -- v. 6; Professional papers of the Engineer Department, U.S. Army -- no. 18
Publisher: Govt. print. off.
Published: ||||
Place of publication: Washington
Subjects: Rocks; Rocks, Crystalline and metamorphic
Table of contents: title: Introductory letter.  Letter to the geologist in charge. Introductory.  Crystalline schists and related rocks.  Granite and graniteporphyry.  Felsite-porphyry and syenite.  Diorite, hornblende-porphyry, diabase, melaphyre, gabbro.  Propylite, quartz-propylite, hornblende-andesite, dacite.  Clastic rocks Trachyte, rhyolite.  Basalts.  Leucite rocks.