Zn-rich ilmenite and pseudorutile: subsolidus products in peraluminous granites of the Melechov Massif, Moldanubian Batholith, Czech Republic

被引：4

作者：

Prochazka, Vaclav ^{[1
,2
]}

Uher, Pavel ^{[3
]}

Matejka, Dobroslav ^{[1
]}

机构：

[1] Charles Univ Prague, Fac Nat Sci, Inst Geochem Mineral & Mineral Resources, CZ-12843 Prague 2, Czech Republic

[2] Inst Chem Technol, Dept Glass & Ceram, CZ-16628 Prague 6, Czech Republic

[3] Comenius Univ, Fac Nat Sci, Dept Mineral Deposits, SK-84215 Bratislava, Slovakia

来源：

NEUES JAHRBUCH FUR MINERALOGIE-ABHANDLUNGEN | 2010年 / 187卷 / 03期

关键词：

Zn-rich ilmenite; pseudorutile; S-type granite; subsolidus granite processes; Melechov Massif; Moldanubian Batholith; Czech Republic; SOLID-SOLUTION; MN ILMENITE; ECANDREWSITE; COMPLEX; PYROPHANITE; OXIDATION; RUTILE; BELT;

D O I：

10.1127/0077-7757/2010/0176

中图分类号：

P57 [矿物学];

学科分类号：

070901 ;

摘要：

In Hercynian peraluminous S-type granites of the Melechov Massif (Moldanubian Batholith, Czech Republic), Zn-rich ilmenite with up to 20 wt. % ZnO formed mainly as a product of subsolidus alteration of biotite into muscovite. Ilmenite usually fills the cleavage of muscovitized biotite. It is often accompanied by a TiO2 phase, Zn-rich pseudorutile and compositions transitional between ilmenite and pseudorutile (Fe23+Ti3O9). At the similar to 1 mu m scale biotite alteration produced very fine intergrowths with muscovite (+/- chlorite). Subsolidus alteration of primary magmatic ilmenite with less than 0.5 wt. % ZnO led to Zn-rich oxide/oxy-hydroxide phases (<= 5.3 wt. % ZnO), characterized by increasing Fe oxidation and decreasing Fe content (down to 15 wt. % Fe2O3).

引用

页码：249 / 263

页数：15