Grunerite is a mineral of the amphibole group of minerals with formula Fe7Si8O22(OH)2. It is the iron endmember of the grunerite-cummingtonite series....

cummingtonite-grunerite solid solution series which ranges from Mg 7Si 8O 22(OH) 2 for magnesiocummingtonite to the iron rich grunerite endmember Fe 7Si...

anthophyllite, riebeckite, the cummingtonite/grunerite series, and the actinolite/tremolite series. The cummingtonite/grunerite series is often termed amosite or...

rocks; with tremolite, ferro-actinolite in metamorphic rocks; and with grunerite, magnetite, hematite, stilpnomelane, ankerite, siderite, calcite, chalcedonic...

dolomite and siderite also readily yield amphibolite (tremolite-schist, grunerite-schist, and others) especially where there has been a certain amount of...

temperatures, and, as a result, hornblende often contains exsolution lamellae of grunerite. Hornblende is a common constituent of many igneous and metamorphic rocks...

Fe)7Si8O22(OH)2 Cummingtonite series Cummingtonite – Fe2Mg5Si8O22(OH)2 Grunerite – Fe7Si8O22(OH)2 Tremolite series Tremolite – Ca2Mg5Si8O22(OH)2 Actinolite...

(variety of quartz) Ammolite (organic; also a gemstone) Amosite (asbestiform grunerite) Antozonite (variety of fluorite) Anyolite (metamorphic rock - zoisite...

greenschist facies of siderite-phyllite, and lower amphibolite facies of grunerite schists.: J15  The iron may have been deposited by volcanic exhalation...

as crocidolite or "blue asbestos", and brown asbestos, a cummingtonite-grunerite solid solution series. The United States Environmental Protection Agency...