Aluminite

（重定向自Alley stone）

An outcrop of aluminite at the top of the white chalk of the cliff at Newhaven, East Sussex, England.

For the igneous rock type "websterite", see websterite.

Aluminite is a hydrous aluminium sulfate mineral with formula: Al₂SO₄(OH)₄·7H₂O. It is an earthy white to gray-white monoclinic mineral which almost never exhibits crystal form. It forms botryoidal to mammillary clay-like masses. It has a very soft Mohs hardness of 1–2 and a specific gravity of 1.66–1.82.

单词	Alley stone
释义	Alley stone 原声例句《基督教科学箴言报》（文章版） The group of young men, consolidated within Nablus' mazelike old city, used its stone alleys as its base and rejected ties to any known political group. 这群年轻人在纳布卢斯迷宫般的老城区巩固了势力，他们以石头小巷为基地，拒绝与任何知名的政治团体联合。英语百科 Aluminite （重定向自Alley stone） For the igneous rock type "websterite", see websterite. Aluminite is a hydrous aluminium sulfate mineral with formula: Al₂SO₄(OH)₄·7H₂O. It is an earthy white to gray-white monoclinic mineral which almost never exhibits crystal form. It forms botryoidal to mammillary clay-like masses. It has a very soft Mohs hardness of 1–2 and a specific gravity of 1.66–1.82.
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