TY - JOUR
T1 - Nomenclature of amphiboles
T2 - Additions and revisions to the international mineralogical association's 1997 recommendations
AU - Leake, Bernard E.
AU - Woolley, Alan R.
AU - Birch, William D.
AU - Burke, Ernst A.J.
AU - Ferraris, Giovanni
AU - Grice, Joel D.
AU - Hawthorne, Frank C.
AU - Kisch, Hanan J.
AU - Krivovichev, Vladimir G.
AU - Schumacher, John C.
AU - Stephenson, Nicholas C.N.
AU - Whittaker, Eric J.W.
PY - 2003/1/1
Y1 - 2003/1/1
N2 - The introduction of a fifth group of amphiboles, the Na-Ca-Mg-Fe-Mn-Li group, defined by 0.50 < B(Mg.Fe2+,Mn2+,Li) < 1.50 and 0.50 ≤ B(Ca,Na) ≤ 1.50 atoms per formula unit, with members whittakerite and ottoliniite, has been required by recent discoveries of B(Li,Na) amphiboles. These, and other new discoveries, such as sodicpedrizite (which is herein slightly, but significantly, changed from the original idealized formula), necessitate amendments to the IMA 1997 definitions ofthe Mg-Fe-Mn-Li, calcic, sodic-calcic and sodic groups. The discovery of obertiite and the finding of an incompatibility in the IMA 1997 subdivision of the sodic group require further amendments within the sodic group. All these changes, which have IMA approval, are summarized.
AB - The introduction of a fifth group of amphiboles, the Na-Ca-Mg-Fe-Mn-Li group, defined by 0.50 < B(Mg.Fe2+,Mn2+,Li) < 1.50 and 0.50 ≤ B(Ca,Na) ≤ 1.50 atoms per formula unit, with members whittakerite and ottoliniite, has been required by recent discoveries of B(Li,Na) amphiboles. These, and other new discoveries, such as sodicpedrizite (which is herein slightly, but significantly, changed from the original idealized formula), necessitate amendments to the IMA 1997 definitions ofthe Mg-Fe-Mn-Li, calcic, sodic-calcic and sodic groups. The discovery of obertiite and the finding of an incompatibility in the IMA 1997 subdivision of the sodic group require further amendments within the sodic group. All these changes, which have IMA approval, are summarized.
KW - Amphibole nomenclature
KW - Ottoliniite
KW - Sodicpedrizite
KW - Whittakerite
UR - http://www.scopus.com/inward/record.url?scp=11144355422&partnerID=8YFLogxK
U2 - 10.2113/gscanmin.41.6.1355
DO - 10.2113/gscanmin.41.6.1355
M3 - מאמר
AN - SCOPUS:11144355422
SN - 0008-4476
VL - 41
SP - 1355
EP - 1362
JO - Canadian Mineralogist
JF - Canadian Mineralogist
IS - 6
ER -