riebeckite वाक्य
उदाहरण वाक्य
मोबाइल
- The amphibole is of high alkali, such as alkaline hornblende and riebeckite.
- Several localities contain the rare amphibole riebeckite and the even more rare mineral astrophyllite.
- Cummingtonite shares few compositional similarities with alkali amphiboles such as arfvedsonite, glaucophane-riebeckite.
- Its mineral association includes nepheline, albite, aegirine, riebeckite, katophorite and quartz.
- Associated minerals include quartz, potassium feldspar, muscovite, schorl, riebeckite and magnesite.
- Glaucophane, crocidolite, riebeckite and arfvedsonite form a somewhat special group of alkali-amphiboles.
- These are : anthophyllite, riebeckite, cummingtonite / grunerite series, and actinolite / tremolite series.
- Riebeckite-granites have close affinities to aplites, shown especially in the prevalence of alkali feldspars.
- It occurs associated with aegirine, riebeckite, barite, fluorite, albite, phlogopite and magnetite.
- Within this granite are darker bands richer in iron because they contain the pyroxene mineral aegirine and the amphibole mineral riebeckite.
- The cummingtonite / grunerite series is often termed amosite or brown asbestos; riebeckite is known as crocidolite or blue asbestos.
- Riebeckite granite was used for the facing stones of the Canton Viaduct from Moyles Quarry ( a . k . a.
- Associated minerals include calcite, dolomite, grossular, wollastonite, talc, diopside, forsterite, cummingtonite, riebeckite and winchite.
- Sometimes granular augite or spongy riebeckite occurs in the groundmass, but as a rule this part of the rock is highly feldspathic.
- "' Crossite "'is an inosilicate double chain sodic amphibole and is a rare silicate mineral belonging to the riebeckite group.
- It was discovered in the Willow creek basin below Silver Star mountain in miarolitic cavities within the alkaline riebeckite granite phase of the Golden Horn batholith, Okanogan County, Washington.
- Exterior stone for the walls, wing wall abutments, portals, deck arches, coping, parapets and the foundation stone are riebeckite granite mined from Moyles quarry ( a . k . a.
- Geologically, the two Dirrington Laws comprise Carboniferous volcanic felsite ( riebeckite ), and may be the remains of a laccolith, a type of volcanic intrusion into the surrounding sedimentary rocks of the Old Red Sandstone.
- However, asbestos are known carcinogens, and cause various other illnesses, such as asbestosis; amphibole asbestos ( anthophyllite, tremolite, actinolite, grunerite, and riebeckite ) are considered more dangerous than chrysotile serpentine asbestos.
- As a result, Arran is sometimes referred to as " Scotland in miniature " and the island is a popular destination for geologists, who come to see micro-granite containing riebeckite known as " Ailsite " which is used to make curling stones.
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