(4)Z3[Si24O72]O0 4–6X2 where N(1–5) ¼ Na, Н3О+, K, Sr, REE, Y, Ba, Mn, Ca; M(1) ¼ Ca, Mn, REE, Na, Sr, Fe; M(2)...generalized for the case D ¼ (Fe,Mg,Mn, Zn)xCayNaz□1-x-y-z as follows: ν[(Ti,Nb)–O] (cm1) ¼ 667 + 27.02x +...following equations: y ¼ 0:0667Δν1 0:0138Δν2 þ 0:914: t ¼ 1:97 þ 1:16y 0:080Δν1 : z ¼ 1 y t: Violations...following abbreviations are used in this chapter: Mt. mountain Co. county IR infrared D density Dmeas measured...29 Mn2+BO2(OH) Locality: Gonzen mine, Sargans, St. Gallen, Switzerland. Description: Pink fibrous aggregate |