Laumontite is a mineral, one of the zeolite group. Its molecular formula is Ca (Al Si 2 O 6)2 · 4 H 2O, a hydrated calcium-aluminium silicate. Potassium or sodium may substitute for the calcium but only in very small amounts. It is monoclinic, space group C2/m.

Named laumonite by Abraham Gottlob Werner in 1805 in honour of Francois Pierre Nicolas Gillet de Laumont (28 May 1747, Laumont near Montmorency, France - 1 June 1834, Paris, France), Inspector General of Mines who first found the mineral (as well as plumbogummite). He was also a mineral collector.

Secondary mineral in basalts and andesites. Also occurs in metamorphic rocks and granites. Found in copper veins. Nagy-Ag, Transylvania of Romania. Link to MinDat.org Location Data. Named after the Frenchman, F. P. N. de Laumont (1747-1834). Comments: Diamond-shaped prism of laumontite with chrysocolla.

Laumontite is a member of the zeolite group, and occurs in many of the zeolite deposits. It is not a stable mineral, losing water in its structure upon exposure to air. This causes Laumontite to be white and powdery, and will cause specimens to crumble when touched. Large crystals can be preserved by coating it with a plastic waterproof sealant.

laumontite, common hydrated calcium and sodium aluminosilicate mineral in the zeolite family, formulated CaAl 2 Si 4 O 12 ·4H 2 O. Its white to yellow or gray prismatic crystals typically occur filling veins and vesicles in igneous rocks.

浊沸石是沸石矿物中常见的一种，它属于 钙 和 钠 的含水铝硅酸盐矿物。 浊沸石呈白到黄色或灰色，晶体为棱柱体。 存在环境：高PH值对浊沸石的形成有利。 且高PH值，低CO2分压对其保存 有利。 国内最权威矿物百科知识库,收集五百多种矿物资料和数万张矿物图片！

Thick sedimentary beds rich in laumontite may form by decomposition of analcime or metamorphism of plagioclase. May be authigenic, cementing sandstones. Zeolites, apophyllite, datolite, calcite, chlorite. Distribution: Relatively common. Well-crystallized specimens: from Huelgoat, Finistμere, France. From S ̧ac ̧ar^amb (Nagy¶ag), Romania.

2014年5月19日 · Laumontite is a mineral, one of the zeolite group. Its molecular formula is CaAl 2 Si 4 O 12 ·4H 2 O, a hydrated calcium-aluminium silicate. Potassium or sodium may substitute for the calcium but only in very small amounts. The identification of laumontite goes back to the early days of mineralogy.

Laumontite was first described by Haüy (1801) and named “zéolithe efflorescente.” The mineral was considered a distinct species by Werner (Jameson, 1805), who changed the name to “lomonite”, honoring Gillet de Laumont, who collected the material studied by Haüy.

浊沸石相（laumontite facies）又称沸石相，是一种 埋藏变质作用 中常见的 变质相。 其温度下限为230℃左右，温度上限为360-370℃，形成时的压力为0.2-0.3GPa。 浊沸石相（laumontite facies）是 变质作用 的开始相，它和 成岩作用 之间的界线，主要是以 浊沸石 开始出现，而 方沸石 、 片沸石 等开始分解，温度稍高时，还有 葡萄石 开始出现。 [1] 根据 片沸石 转变为 浊沸石 和 石英 的变质反应，浊沸石相的温度下限为230℃左右。 根据浊沸石完全分解转变为 绿纤石 的 …