melanterite


Also found in: Encyclopedia, Wikipedia.
Related to melanterite: copperas, sphalerite, Copiapite

melanterite

(mɛˈlæntəˌraɪt)
n
(Geological Science) a green mineral, FeSO4.7H2O, composed of hydrated ferrous sulphate
References in periodicals archive ?
Interesting occurrences of secondary sulfates such as melanterite, gypsum and epsomite have also been reported.
The iron sulfate melanterite is found as colorless, water-soluble fibers; blue copper sulfate chalcanthite lamellae and blue-green aggregates of acicular crystals of the Ca-Cu-Zn sulfate serpierite (some accompanied by green spherules of cornwallite) are found at Aghbar.
Masses of beautiful blue crystals of post-mining chalcanthite are found in several sections of the mine, especially along the San Jose vein, growing in fissures in the rock walls or hanging from wooden beams, and these are popular with local mineral collectors, although many of their specimens of calcantita are really the more common cuprian melanterite.
Associated minerals include botryogen, copiapite, anhydrite, gypsum, melanterite, marcasite and sulfur.
The alunogen and melanterite are probably the minerals responsible for the acidic properties of the matrix, which destroys the paper used to wrap the specimens.
Associated minerals are: melanterite, pickeringite, potassium alum, jarosite, gypsum, arsenolite, sulphur and some unknown minerals.
Associated minerals are: coskrenite-(Ce), zugshunstite-(Ce), melanterite, halotrichite, pickeringite, apjohnite, epsomite and other hydrated sulfates.
arsenic, arsenopyrite, arsenosulvanite, barite, (*) berndtite, bismuthinite bournonite, calcite, cassiterite, chalcopyrite, chlorargyrite, diaphorite, franckeite, freibergite galena, goethite (iridescent), goslarite, halotrichite, hematite, jamesonite, jarosite, matildite, melanterite, miargyrite, nacrite, (*) ottemannite, phosphophyllite, pickeringite, pyrargyrite, pyrite, pyrostilpnite, quarz, siderite, sideronatrite, siderotil, silver, smitsonite, sphalerite, stannite, stephanite, stibnite, tetrahedrite, valentinite, voltaite, wavellite, wolframite, wurtzite Cerro San Pedro Large orthoclase phenocrysts, often replaced by quartz, chlorite, siderite, etc.
A relatively rare secondary mineral, botryogen occurs as thin, orange-yellow crusts up to several square centimeters in area in the Andrassy III section, associated with epsomite, melanterite and copiapite (Szakall et al.
Greenish brown melanterite has been found as an alteration product of iron sulfides in the Brenner mine.
Species confirmed by X-ray diffraction during this study include alstonite, anglesite, ankerite, aragonite, barytocalcite, barite, brochantite, epsomite, harmotome, hydromagnesite, jarosite, marcasite, melanterite, millerite, serpierite, siderite, sulfur and witherite.
Alum Cave Bluff, a Dana locality for apjohnite, epsomite, melanterite and potash alum, has yielded good microcrystals of several rare sulfate minerals, including three new rare-earth sulfates, and is the first North American occurrence of slavikite.