Laumontite - Wikipedia
Laumontite is a mineral, one of the zeolite group. Its molecular formula is Ca ( Al Si 2 O 6 ) 2 · 4 H 2 O , a hydrated calcium-aluminium silicate. Potassium or sodium may substitute for the calcium but only in very small amounts.
Laumontite Mineral Data
Fridriksson T , Bish D L , Bird D K , American Mineralogist , 88 (2003) p.277-287, Hydrogen-bonded water in laumontite I: X-ray powder diffraction, study of water site occupancy and structural changes in laumontite, during room-temperature isothermal hydration/dehydration, Sample: P = 0.11 mbar PH2O
The Mineral laumontite - The Mineral and Gemstone Kingdom
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 | Hydrated Calcium Silicate, Zeolite, Clay Mineral
Laumontite, common hydrated calcium and sodium aluminosilicate mineral in the zeolite family, formulated CaAl2Si4O12·4H2O. Its white to yellow or gray prismatic crystals typically occur filling veins and vesicles in igneous rocks. It is one of the more abundant zeolites present in sedimentary rocks
rich in laumontite may form by decomposition of analcime or metamorphism of plagioclase. May be authigenic, cementing sandstones. Association: Zeolites, apophyllite, datolite, calcite, chlorite. Distribution: Relatively common. Well-crystallized specimens: from Huelgoat,Finistµere, France. From S¸ac¸ar^amb (Nagy¶ag),Romania.
浊沸石相 - 百度百科
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。
Laumontite - Geology Page
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 - PubChem
Laumontite is a mineral with formula of Ca(Si 4 Al 2)O 12 ·4H 2 O or CaAl 2 Si 4 O 12 ·4H 2 O. The corresponding IMA (International Mineralogical Association) number is IMA1997 s.p.. The IMA symbol is Lmt.
Laumontite - an overview | ScienceDirect Topics
Laumontite and analcime are common products developed through burial, contact, or ocean-floor metamorphism. Early minerals are replaced by higher temperature (or more stable) zeolites with deeper burial.
Laumontite - iza-online.org
Laumontite is a common product of reaction between hot water and permeable rock with a calcic component. Environments that produce laumontite range from shattered rock near fault zones with low water to rock ratios to active geothermal systems with much higher ratios.