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May be cut smoothly with a knife. Relatively few minerals are sectile. Sectility is a form of tenacity and can be used to distinguish minerals of similar appearance. [2] Gold, for example, is sectile but pyrite ("fool's gold") is not.
tenacity tenacity (how the mineral can deform or break) brittle mohs hardness (scratchability) of mineral on Mohs hardness scale: 3-3.5 luster way the mineral reflects light, see luster: lustre same as above, but for British pages: streak see streak: diaphaneity transparency of mineral: gravity specific gravity: density density at STP in g/cm 3 ...
The Mineralogical Record was first published in 1970, on the initiative of John S. White, a curator in the Smithsonian Institution's Department of Mineralogy, with the aim of filling the gap between scientific mineralogy journals (which began at that time to look more like solid state physics and chemistry than conventional descriptive mineralogy) and purely amateur magazines. [1]
Sectility is the ability of a mineral to be cut into thin pieces with a knife. [1] Minerals that are not sectile will be broken into rougher pieces when cut. Metals and paper are sectile. Sectility can be used to distinguish minerals of similar appearance, and is a form of tenacity. [2] For example, gold is sectile but pyrite ("fool's gold") is ...
Reviews in Mineralogy and Geochemistry is the official review journal of the Mineralogical Society of America and The Geochemical Society. It was established in 1974 as Mineralogical Society of America Short Course Notes and renamed to Reviews in Mineralogy in 1980. It obtained its present name in 2000.
Contributions to Mineralogy and Petrology is a peer-reviewed scientific journal published by Springer Science+Business Media since 1947. The journal is a hybrid open-access journal . The journal covers the fields of igneous and metamorphic petrology , geochemistry , and mineralogy .
These minerals are found in high-grade metamorphic banded iron formation and form a compositional series between Mn 2 Mg 5 Si 8 O 22 (OH) 2 (tirodite) and Mn 2 Fe 5 Si 8 O 22 (OH) 2 (dannemorite). Calcium, sodium and potassium concentrations in cummingtonite are low. Cummingtonite tends toward more calcium substitution than related anthophyllite.
List of minerals recognized by the International Mineralogical Association (U–V) List of minerals recognized by the International Mineralogical Association (W–X) List of minerals recognized by the International Mineralogical Association (Y–Z) Mineral; List of minerals; List of minerals recognized by the International Mineralogical Association