Monzodiorite - Wikipedia
Monzodiorite is an intrusive rock with a composition intermediate between diorite and monzonite. It is defined in the QAPF classification as coarse-grained igneous rock in which quartz makes up 0% to 5% of the QAPF mineral fraction, plagioclase makes up 65% to 90% of the total feldspar content, and the plagioclase is sodium-rich (% An < 50).
Monzodiorite and monzogabbro – Geology is the Way
Monzodiorite and monzogabbro are intermediate plutonic igneous rocks containing plagioclase, alkali feldspar, biotite, hornblende and/or pyroxene. These rocks, together with monzonite, used to be called respectively syenodiorite and syenogabbro, due to their composition, lying halfway between syenites and diorite/gabbro in the QAPF diagram ...
Monzodiorite: Mineral information, data and localities. - mindat.org
A term suggested to replace syenodiorite for a plutonic rock intermediate between monzonite and diorite. Monzodiorite is in section 9 of the QAPF diagram. A subgroup of the Feldspar Group, poor in calcium, and mostly rich in potassium. A commonly used informal name for dark green to black amphibole s, largely in the Hornblende Root Name ...
monzodiorite | Encyclopedia.com
monzodiorite A coarse-grained igneous rock consisting of essential plagioclase feldspar, orthoclase feldspar, hornblende, and biotite, with or without pyroxene. Plagioclase is the dominant feldspar making up 60–90% of the total feldspar and varying from oligoclase to …
monzodiorite - Clark Science Center
Monzodiorite: “A term suggested to replace syenodiorite for a plutonic rock intermediate between monzonite and diorite.
西藏冈底斯西段鲁尔玛晚三叠世二长闪长岩的成因
These characteristics suggest that the Luerma monzodiorite is a quasi-aluminous and alkaline-shoshonite series. The rocks are enriched in light rare earth elements (LREE) and large ion lithofile elements (LILE), and depleted in heavy rare earth elements (HREE) and high field strength elements(HFSE), with LREE/HREE ratios of 7.45 to 11.10.
Monzonite - Wikipedia
Monzonite is an igneous intrusive rock, formed by slow cooling of underground magma that has a moderate silica content and is enriched in alkali metal oxides. Monzonite is composed mostly of plagioclase and alkali feldspar. Syenodiorite is an obsolescent term for monzonite [1] or for monzodiorite. [2] . Larvikite is a particular form of monzonite.
Monzodiorite - Oxford Reference
5 天之前 · A coarse-grained igneous rock consisting of essential plagioclase feldspar, orthoclase feldspar, hornblende, and biotite, with or without pyroxene. Plagioclase is the dominant feldspar making up 60–90% of the total feldspar and varying from oligoclase to …
Archean high-Mg monzodiorite–syenite, epidote skarn, and …
2007年12月19日 · The inner heterogranular (1–4 mm) monzodiorite is segregated into hornblende- and feldspar-rich schlieren and bands. The discordant phase of quartz monzodiorite to granodiorite contains less hornblende (10–15%) and biotite (2–5%), both in clotted aggregates enclosing remnant augite (0.5%).
Neoproterozoic quartz monzodiorite–granodiorite association …
2015年9月1日 · The quartz monzodiorite and the granodiorite from the Luding–Kangding area are characterized by identical formation ages but different geochemical features. The quartz monzodiorite from the Luding area have lower SiO 2 contents and higher TiO 2, Fe 2 O 3 T, MgO contents and Mg# values, as shown in the ɛ Nd (t) vs. (87 Sr/ 86 Sr)i diagram ...
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