#alunit

• 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.
• Small mole — Diminutive of the noun 'alună' (the hazelnut fruit) or an alternative, sometimes regional or affective, form for 'aluniță' (small pigmented spot on the skin, nevocellular nevus). In a botanical sense, it describes a small, immature, or wild hazelnut, while in an anatomical sense, it represents a small, circumscribed benign cutaneous formation colored in shades of brown or black.
• 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.
• Alunitization — A geological process of acid hydrothermal alteration of volcanic or magmatic rocks rich in feldspars, under the action of ascending solutions charged with sulfuric acid; the act of transforming into alunite. This structural phenomenon leads to the replacement of primary minerals with alunite, quartz, and kaolinite, constituting a valuable indicator in geological prospecting for metalliferous deposits.