Riebeckite is a sodium-rich member of the amphibole group of silicate minerals, chemical formula Na2(Fe2+3Fe3+2)Si8O22(OH)2. It forms a solid solution...

amphibole minerals are commonly called asbestos. These are: anthophyllite, riebeckite, the cummingtonite/grunerite series, and the actinolite/tremolite series...

2O 22(OH) 2 Sodium amphibole group Glaucophane – Na2Mg3Al2Si8O22(OH)2 Riebeckite (asbestos) – Na2FeII3FeIII2Si8O22(OH)2 Arfvedsonite – Na3(Fe,Mg)4FeSi8O22(OH)2...

similarities with alkali amphiboles such as arfvedsonite, glaucophane-riebeckite. There is little solubility between these minerals due to different crystal...

Russia. Its mineral association includes nepheline, albite, aegirine, riebeckite, katophorite and quartz. Arfvedsonite was discovered in 1823 and named...

(short for minerals of the columbite group) Crocidolite (asbestiform riebeckite) Cymophane (variety of chrysoberyl) Danalite Danburite Datolite Daubréeite...

described as peralkaline, and they contain unusual sodium amphiboles such as riebeckite. Granites in which there is an excess of aluminum beyond what can be taken...

(var.) Quartzite Realgar Rhodizite Rhodochrosite Rhodonite Richterite Riebeckite Crocidolite (var.) Rosasite Rutile Samarskite Sanidine Sapphirine Sarcolite...

and marls. It occurs in association with potassic feldspar, nepheline, riebeckite, arfvedsonite, aenigmatite, astrophyllite, catapleiite, eudialyte, serandite...

phyllosilicate part of the serpentine group. Other asbestiform minerals include riebeckite, an amphibole whose fibrous form is known as crocidolite or "blue asbestos"...

for this species. Glaucophane, along with the closely related mineral riebeckite, to which it forms a series with, and their intermediate crossite, are...

grossular, wollastonite, talc, diopside, forsterite, cummingtonite, riebeckite and winchite. Tremolite was first described in 1789 for an occurrence...

bipyramidal quartz. The blue colour is caused by very small crystals of riebeckite or arfvedsonite. The 1903 eruption of Changbaishan volcano in northeast...

chain sodic amphibole and is a rare silicate mineral belonging to the riebeckite group. It is considered an intermediate between the amphiboles glaucophane...

within a serpentinite body. In Japan, the mineral occurs in a magnesio-riebeckite-quartz-phlogopite-albite dike cutting a serpentinite body. Blue benitoite...

in its structure. Blue quartz contains inclusions of fibrous magnesio-riebeckite or crocidolite. Inclusions of the mineral dumortierite within quartz pieces...

as feldspar, and the excess sodium will form sodic amphiboles such as riebeckite. If the aluminium abundance is unusually high, the excess aluminium will...

rectangular prisms of the same mineral. Sometimes granular augite or spongy riebeckite occurs in the groundmass, but as a rule this part of the rock is highly...

commonly known as blue asbestos, is the fibrous form of the amphibole riebeckite, found primarily in southern Africa, but also in Australia and Bolivia...

hue of the exposed granite faces when viewed from a distance (due to Riebeckite). The Blue Hills' eastern slopes face the ocean and lie within Quincy...

of artifacts from Eastern Asia, India, Arabia and Africa. The mineral riebeckite is named after him. Also, a species of Socotran lizard, Haemodracon riebeckii...

that needed for feldspar. The presence of aegerine (sodium pyroxene) and riebeckite (sodium amphibole) are indicative of peralkaline conditions. Examples...

noticed the bluish hue of the mountains, which is caused by the presence of riebeckite, giving the area its modern name. The name of the state of Massachusetts...

the island has been quarried for its rare type of micro-granite with riebeckite (known as "Ailsite"), which is used to make stones for the sport of curling...

observed. The amphibole is of high alkali, such as alkaline hornblende and riebeckite. The alkaline clinopyroxene and amphibole are characteristics of typical...

Associated minerals include quartz, potassium feldspar, muscovite, schorl, riebeckite and magnesite. Discovered at the San Francisco mine, near Villa Tunari...

Geologically, the two Dirrington Laws comprise Carboniferous volcanic felsite (riebeckite), and may be the remains of a laccolith, a type of volcanic intrusion...

Crocidolite (blue asbestos), variety of riebeckite - Locality: Pomfret Mine, Vryburg...

Fluoro-richterite Flrct Fergusonite-(Ce)-β Fgs-Ce-β Ferroskutterudite Fskt Fluoro-riebeckite Frbk Fergusonite-(Nd)-β Fgs-Nd-β Ferrostalderite Fstd Fluoro-taramite...

Na and F metasomatism. Sm-Nd monazite isochron age for bastnaesite and riebeckite is 1200 to 1300 Ma, whereas Th-Pb and Sm-Nd age of Ba-REE-F carbonates...