Diorite

La diorite è una roccia intrusiva intermedia, come composizione chimica e mineralogica, fra la famiglia del granito e quella del gabbro. Anche la tessitura particolare che la costituisce, quella orbicolare, è analoga a quella di alcuni graniti, ma la composizione mineralogica. Hauy che lo utilizzò per descrivere rocce formate da porzioni bianche (feldspato) e porzioni . Roccia intrusiva con composizione chimica e mineralogica intermedia fra quelle dei graniti e dei gabbri.

Haüy a una roccia formata da un minerale bianco (feldspato) e da un minerale scuro (anfibolo o pirosseno).

Rose limitarono il nome a una roccia essenzialmente plagioclasico-anfibolica, e in questo . A seconda che siano o no presenti piccole quantità di quarzo, si distinguono diorite quarzifere . Roccia eruttiva intrusiva a struttura granulare, usata come materiale da costruzione e per decorazioni. Definizione e significato del termine diorite. Per scoprire tutte le realizzazioni, visitate il sito. It is an extremely hard rock and difficult to carve and work with.

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Please hover over at your . It is produced in volcanic arcs, and in mountain building where it can occur in large volumes as batholiths in the roots of mountains (e.g. Scotlan Norway). Because it is commonly speckled black and white, it is often referred to as salt and . Because diorite does not contain a wide variety of large cluster and veins, it is an interesting layer for players who insist on color uniformity. It is visibly crystalline and usually has a granular texture ( composed of roughly equally sized crystals) although the appearance may vary widely. Its volcanic (fine-grained) analogue is andesite.

The sizes of grains are coarse and may be pegmatitic. Texture is equigranular or porphyritic. Sometimes diorites are foliated due to the roughly parallel arrangement of the minerals.

It usually occurs as quite small intrusions often associated with larger intrusions like granite. Diorite (red) on the QAPF diagram. Slow cooling produces the large crystals.

Moltissimi esempi di frasi con diorite – Dizionario italiano-inglese e motore di ricerca per milioni di traduzioni in italiano. QUARTZ DIORITE Quartz diorite crops out on Lemesurier Islan east of Dundas Bay, and on the mountains east of Rush Point. Another body of quartz diorite crops out on the mountains in the southeast corner of the B–quadrangle, but the relation of this quartz diorite to that found in the eastern part of the B-quadrangle . West of the Iron King mine, the most southerly exposure of quartz diorite is shown in the southwest corner of plate and only the northern tip of this body has been mapped.

A band of quartz diorite , more than miles long . Esempi di come utilizzare diorite in una frase tratti da Cambridge Dictionary Labs. Varieties that lack hornblende are referred to as leucodiorite. Minerali accessori: titanite, ortite e quarzo.

The color of diorite varies from grey to dark grey to black, speckled with lighter colors that may . DIORITE DIORITE is a privately owned corporate services provider offering tailor- made management, domiciliation and administrative solutions to corporate and private clients.