Hedenbergite, or calcium iron pyroxene, is a black mineral closely allied to diopside and, owing to the isomorphous replacement of iron by magnesium, there is no sharp line of division between them. Hedenbergites chemical forumula is CaFe[Si_2 O_6] General Name, Symbol, Number calcium, Ca, 20 Chemical series alkaline earth metals Group, Period, Block 2, 4, s Appearance silvery white Atomic mass 40. ... Figure 1:Mantle-peridotite xenolith with green peridot olivine and black pyroxene crystals from San Carlos Indian Reservation, Gila Co. ... Diopside is a monoclinic pyroxene mineral with composition MgCaSi2O6. ...
This article incorporates text from the Encyclopædia Britannica Eleventh Edition, a publication now in the public domain.
Categories: Wikipedia articles incorporating text from the 1911 Encyclopædia Britannica | Mineral stubs | Iron minerals | Calcium minerals | Silicate minerals EncyclopÃ¦dia Britannica, the 11th edition The EncyclopÃ¦dia Britannica Eleventh Edition (1910â1911) is perhaps the most famous edition of the EncyclopÃ¦dia Britannica. ... The public domain comprises the body of all creative works and other knowledge—writing, artwork, music, science, inventions, and others—in which no person or organization has any proprietary interest. ...
Hedenbergite is found at both Franklin and Sterling Hill, but is an uncommon mineral at both localities, being restricted to a few anomalous assemblages, in keeping with the dominant Mn/Mg local solid solution and the paucity of iron silicates.
Hedenbergite was found in an assemblage of calcite, franklinite, ferroactinolite, and andradite from drill-hole #124, 119 feet from its origin on the 340 level, surrounded by andradite and altering to cummingtonite and ferroactinolite (Reilly, 1983).
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