Gonnardite is a tectosilicate belonging to the natrolite group. The natrolite minerals are composed of chains of AlO 4 and SiO 4 tetrahedra that link to form frameworks. As with all zeolites, there …

Named in honor of Ferdinand-Pierre-Joseph Gonnard (30 March 1838, Gannat, Allier, France - 16 October 1923, Lyon, Rhône, France), Professor of Mining Engineering at the University of …

Comments: White, pseudocubic crystals of tetranatrolite (gonnardite) on matrix. Location: Point of Rocks Mesa, Colfax County, New Mexico, USA. Scale: Not Given.

The plot reveals that most high-Na mesolites are ranites, a number of gonnardites are ranites and one or two are tetranatrolites. The compositional field of gonnardite crosses that of mesolite …

The earliest growth of many natrolite clusters appears to be gonnardite, and as growth slows the crystal becomes ordered. Gonnardite clusters occurs in two principal environments, in cavities …

纖沸石 (Gonnardite). Gonnardite是一種相對稀有的纖維狀沸石，鈉沸石。 較早的論文聲稱，四鈉鋁石和菱鎂礦之間存在完全固溶體，但在1999年四鈉鋁石被認為是一個單獨的物種。

1999年9月1日 · The crystal structure of gonnardite from syenite pegmatite in larvikite of the Vevja quarry, Tvedalen, Langesund district, Norway, has been determined and refined to R 2.2% in …

Gonnardite Na2CaAl4Si6O20² 7H2O °c 2001 Mineral Data Publishing, version 1.2 Crystal Data: Tetragonal. Point Group: 42m: Fibrous crystals, at the centers of radiating spherulites, to 3 cm; …

White gonnardite covers compact, radial, blue thomsonite-Ca on green smectite rarely in some of the Eocene basalt near Big Tree Creek, Yacolt, Clark County, Washington. Specimen was …

1999年9月1日 · Only recently was the structural relationship to natrolite confirmed unambiguously by single crystal X-ray diffractometry. The present chemical and crystallographic study re …