sphaerosiderite

sphaerosiderite

(ˌsfɪərəʊˈsɪdəˌraɪt)
n
(Minerals) a type of siderite
References in periodicals archive ?
Browne and Kingston (1993) analyzed sphaerosiderite from mudrocks at ~609 m in our section and determined that the body of water must have experienced reducing, stagnant conditions and contained a sufficiently low amount of dissolved sulfate to be considered of freshwater origin.
Sphaerosiderites in the Lower Tuscaloosa Formation will extend the paleolatitudinal gradient in meteoric [delta][d.