#alunite

• The hazelnuts — The definite articulated form of the plural noun 'alune' (hazelnuts). In everyday speech and popular medical terminology, it functions as the plural form for 'aluniță' (melanocytic nevi), designating small pigmented spots or benign growths on the skin.
• Alunite — A natural mineral from the class of hydrated sulfates, structurally composed of a basic aluminum and potassium sulfate, having the chemical formula KAl3(SO4)2(OH)6. Historically called alumstone, it occurs as granular, fibrous masses or white, grayish, or reddish rhombohedral crystals, used on an industrial scale for extracting alum and aluminum.
• Alunite — A formal variant or structural feminine adaptation of the term 'alunit', sometimes used in older technical literature or mining jargon to denote alumstone; a sedimentary or hydrothermal rock composed predominantly of this mineral. This compound represents an important natural source of hydrated aluminum and potassium sulfates, processed industrially for its astringent qualities.