Syenite is a coarse-grained intrusive igneous rock with a general composition similar to that of granite, but deficient in quartz, which, if present at...

Nepheline syenite is a holocrystalline plutonic rock that consists largely of nepheline and alkali feldspar. The rocks are mostly pale colored, grey or...

history. The story then follows three female orogenes (Essun, Damaya, and Syenite) from across the Stillness. Essun is a middle-aged woman with two young...

Outer Coarse Syenite, the Nepheline Sodalite Syenite, the Fire Tower Syenite, the Garland Peak Syenite, the Watson Ledge Quartz Syenite, and the Interior...

Syenite is an unincorporated community in southern St. Francois County, in the U.S. state of Missouri. The community lies on Missouri Route DD, west of...

coarse-grained, foliated variety of nepheline syenite, sometimes called nepheline syenite gneiss or gneissic nepeheline syenite. Litchfieldite is composed of two...

alkali feldspar – a plutonic rock with <5% normative quartz Nepheline syenite – Holocrystalline plutonic rock – A silica-undersaturated plutonic rock...

Concord Gabbro-Syenite Complex is a paleozoic pluton located in North Carolina. The complex is mainly composed of gabbro and syenite and is of the Silurian-Devonian...

enriched with silica and alkali metals. It is the volcanic equivalent of syenite. Trachyte is common wherever alkali magma is erupted, including in late...

exposures of the Beemerville Alkaline Complex consist of two large nepheline syenite plutons; a nearby diatreme (Rutan Hill); and several other nearby and much...

Kishangarh, 14% of the population is under 6 years of age. Kishangarh Nepheline Syenite is among the 32 National Geological Monuments in India notified by Geological...

varieties of syenite, diorite, gabbro, etc., in which feldspathoid minerals occur, and indeed there are many transitions between syenites of ordinary type...

minerals. For example, a syenite with significant nepheline present can be termed a nepheline-bearing syenite or nepheline syenite, with the term nepheline...

The exposed laccolith atop a massive pluton system near Sofia, formed by the Vitosha syenite and Plana diorite domed mountains and later uplifted...

minerals are calcium carbonate (limestone), building stone, nepheline syenite, olivine, iron, titanium, and nickel. In 2017, the Government Pension Fund...

article incorporates public domain material from Feldspar and nepheline syenite (PDF). United States Geological Survey. Warr, L.N. (2021). "IMA–CNMNC approved...

metamorphic terranes. It also occurs in low-silica igneous syenite and nepheline syenite intrusives. Other occurrences are as masses adjacent to ultramafic...

historical petrological name for a pyroxene-melanite bearing nepheline syenite variety which contains nepheline-alkali feldspar pseudomorphs interpreted...

feldspathoid-bearing monzonite. Rock richer in alkali feldspar is classified as syenite, while rock richer in plagioclase is termed a monzodiorite. The volcanic...

composition of granite while nepheline syenite pegmatite is a pegmatite with the composition of nepheline syenite. However, the British Geological Survey...

Illimaussaq alkaline complex consists of pegmatites such as nepheline, syenites (especially kakortokite or naujaite) and sodalite (sodalite-foya). In Ivittuut...

nepheline syenites. Its name alludes to its ready solubility in acid. Eudialyte was first described in 1819 for an occurrence in nepheline syenite of the...

suite (emplaced approximately 3.5–3.2 Ga), and the granite–monzogranite–syenite granite (GMS) suite (emplaced approximately 3.2–3.1 Ga). The GMS suite...

Maria Konopnicka Monument (Polish: Pomnik Marii Konopnickiej) is a syenite statue in Warsaw, Poland, within the Saxon Garden in the Downtown district...

of alkali feldspar. Granitic rocks poorer in quartz are classified as syenites or monzonites, while granitic rocks dominated by plagioclase are classified...

Parashi stock (of tonalite) in La Guajira Department, Colombia stocks of syenite in the Caldera de Tejeda on Gran Canaria Ailsa Craig granitic boss, which...

rocks. Its coarse grained (phaneritic) intrusive equivalent is nepheline syenite. Phonolite is typically fine grained and compact. The name phonolite comes...

banks of the Maritsa River. The city has historically developed on seven syenite hills, some of which are 250 metres (820 feet) high. Because of these hills...

Great West Notch and the Kibo Barranco. The former exposes intrusions of syenite. Kibo has five main lava formations: Phonotephrites and tephriphonolites...

built in the region, a particular type of granite is used called nepheline syenite. It is fine grained and has also been used in historic monuments like the...