Wandagee Lamprophyre Suite, Western Australia . The Wandagee Lamprophyre Suite in Western Australia is host to diamond-bearing picritic monchiquite lamprophyre plugs. There are at least 14 known sills, dykes and carrot-shaped diatremes mostly concealed beneath thin …
توده خانکندی در شمال باختر ایران و پهنه قره داغ (ارسباران)- ارمنستان جنوبی قرار دارد. رخنمون‌های چیره شامل سنگهای گرانودیوریتی و مونزونیتی هستند که همراه با آنها گابروها و دایک‌های داسیتی و لامپروفیری نیز رخنمون ...
Lamprophony definition, loudness and clarity of voice. See more.
پترولوژی، ژئوشیمی و کانی سازی سنگهای آتشفشانی ترشیری و توده های نفوذی و نیمه نفوذی همراه آنها در منطقه ارغش- قاسم آباد (شمال شرق ایران) با گرایشی ویژه به سن و منشا گرانیت ها
Lamprophyre definition is - any of a series of dark rocks of basaltic habit that resemble trap, occur usually in narrow dikes, and sometimes contain glittering plates of biotite.
لامپروفیرها و سنگهای مرتبط از جنوب‌غرب سلماس، به سن کواترنری، بر روی رسوبات دشت سیلابی قدیمی در مرز پهنه‌‌های سنندج- سیرجان و کمربند ماگمایی ارومیه- دختر رخنمون دارند. این سنگ‌ها همگی طبیعت آلکالن دارند و شامل ...
Lamprophyre, any of a group of dark gray to black intrusive igneous rocks that generally occur as dikes (tabular bodies inserted in fissures).Such rocks are characterized by a porphyritic texture in which large crystals (phenocrysts) of dark, iron-magnesium (mafic) minerals are enclosed in a fine-grained to dense matrix (groundmass). The abundance, large size, well-formed crystal outline, and ...
Jun 18, 2017· Is a melilitic lamprophyre that usually contain between 10-30% of feldspathoids (Nepheline and Hauyne) and it normally contains the same minerals as occur in alnöite. Alnoite; From Alno island, Sweden. A alnoite is a porphyritic alkaline igneous rock dominated by essential olivine, biotite and pyroxene, in a groundmass containing melilite. ...
This has, by and large, dispensed with the previous provincial names of lamprophyre species, in favor of a mineralogical name. The old names are still used for convenience. Vogesite. Vogesite was first described from the Vosges mountains, France, where rocks of this type (actually, minette) were described in the early 20th century.
The lamprophyre intrudes Gondwana sediments, and they are commonly found within the coal seams of the Barakar and Raniganj formations. In an area north-northwest of the town of Asansol (Fig. 5.2), NW-SE trending dolerite dykes, and a N-S trending lamprophyre dyke cuts across a set of lamprophyre sills. Field relation suggests the dykes to be ...
lamprophyres definition: Noun 1. plural form of lamprophyre...
lamprophyre definition: nounA dark igneous rock, having porphyritic texture, in which both the phenocrysts and the matrix consist of hornblende, pyroxene, and biotite. Origin of lamprophyreGerman Lamprophyr Greek lampros clear ( from lampein to sh...
To an uncomfortably large number of geologists, the term ‘lamprophyre’ conjures up predominantly negative images: of rotten dykes forming miniscule, impersistent outcrops; of legion obscure rock-types named after equally obscure European villages. To many, indeed, the term connotes little more than ‘horribly altered’, or ‘impossible ...
