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 (ăj′ə-lâr′ē-ə, -lăr′-)
A colorless to milky white mineral of the potassium feldspar group that forms from relatively low-temperature magmas and lacks structural homogeneity.

[Italian, from French adulaire, after Adula, a mountain group of southeast Switzerland.]


(Minerals) a white or colourless glassy variety of orthoclase in the form of prismatic crystals. It occurs in metamorphic rocks and is a minor gemstone. Formula: KAlSi3O8
[C18: via Italian from French adulaire, after Adula, a group of mountains in Switzerland]


(ˌædʒ əˈlɛər i ə)

n., pl. -lar•i•as.
a sometimes opalescent variety of orthoclase formed at a low temperature.
[1790–1800; < Italian < French adulaire, after Adula a mountain group in Switzerland; see -ary]
References in periodicals archive ?
The gold bearing veins at Paciencia are associated with adularia, chalcedony, sulfosalts and crustiform-colloform textures typical of low sulfidation gold-silver bearing systems that are found elsewhere in northern Chile.
Se identifica tambien el uso de cuarzo amatista; esmeralda; cuarzo hialino; calcedonias azules y marrones; cordierita-iolita; adularia y aguamarina (32).
Feeding potential in the lecithotrophic larvae of Adularia proxima and Tritonia hombergi: an evolutionary perspective.
Al contrario de la alteracion aurifera no hay presencia de vetas de cuarzo ni de calcita, tampoco tienen clorita ni adularia.
Un tercer tipo de veta observado en el lugar, aunque de menor desarrollo, esta compuesto por cristales de silice y adularia generando un bandeamiento caracteristico.
Hydrothermal eruption breccias, sinter overlying zeolytic tuffs and hydrothermal adularia in permeable fault zones are indicators of hydrothermal activity that may have formed zeolites, as suggested by Brathwaite (2006).
The person who he's seeing the future for has to hold Adularia until it warms up.
A geological tourist in Brimfield - Dana specifies the "road leading to Warren" - might happen upon some lovely iolite, or traces of adularia, mica or garnet.
Specular hematite, albite, adularia, and quartz fill voids and form veins, and also occur as granulated fragments in the groundmass.
Frecuentemente presentan venillas de cuarzo recristalizado y otras de cuarzo con textura en peine y cristales de adularia intersticiales en individuos de forma rombica.
The mineralisation is hosted in quartz lodes carrying quartz, carbonate and adularia, and late-stage breccia channels carrying bonanza gold grades.