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Phosphorite – Sedimentary rock containing large amounts of phosphate minerals – A non-detrital sedimentary rock that contains high amounts of phosphate minerals; Sandstone – Type of sedimentary rock; Shale – Fine-grained, clastic sedimentary rock; Siltstone – Sedimentary rock which has a grain size in the silt range
Normative mineralogy is an estimate of the mineralogy of the rock. It usually differs from the visually observable mineralogy, at least as much as the types of mineral species, especially amongst the ferromagnesian minerals and feldspars, where it is possible to have many solid solution series of minerals, or minerals with similar Fe and Mg ratios substituting, especially with water (e.g ...
About 65% of the Earth's crust by volume consists of igneous rocks. Of these, 66% are basalt and gabbro, 16% are granite, and 17% granodiorite and diorite. Only 0.6% are syenite and 0.3% are ultramafic. The oceanic crust is 99% basalt, which is an igneous rock of mafic composition.
Comparison of different minerals in a rock sample thus allows scientists to infer the original 87 Sr/ 86 Sr ratio and determine the age of the rock. In addition, Rb is a highly incompatible element that, during partial melting of the mantle, prefers to join the magmatic melt rather than remain in mantle minerals.
Introduction to the Rock-forming Minerals is a condensed version of the multi-volume work Rock-forming Minerals by the same authors, which was published in 1962-3 with a second edition beginning in 1978, totalling 11 volumes. The condensed version omits some references, etymology, and chemical analysis present in the larger work.
W A Deer, R A Howie and J Zussman authored the series 'Rock-Forming Minerals', a widely known mineralogy textbook (1 ed. had 5 vol., 2 ed. has finally all 11 vol.). He was principal editor of Mineralogical Abstracts (1971–2003), he would write over 1600 abstracts per year (during c. 35 years).
'clarke of atom count': When the whole count of atoms in a rock Y is , and the atom count of silicon there is [mol], then silicon's clarke of atom count in rock Y is = (dimensionless) Fersman's "clarke of Earth's crust" is the Earth's surface including 16 km-thick lithosphere , hydrosphere and atmosphere .
This is a list of the various minerals, mineraloids, and varieties that are in Wikipedia. The list is split into 3 sections - those done up top, those to do below, and minerals without wiki articles last.