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- A hexagonal mineral, Fe2 Ti3 O9 ; in irregular metallic steel-gray masses in pegmatite veins near Hackberry, AZ. Formerly called pseudorutile.
- A mixture of hematite, rutile, ilmenite, and anatase. AGI
- An ore of micaceous iron, silver iodide, gold, iron sulfides, and antimony in a vein in Yavapai County, AZ. AGI
- A hypabyssal rock with 80% quartz, 18% alkali feldspar, and accessory mica and apatite in Arizona (not a rock name in the IUGS classification). AGI
Source: Dictionary of Mining, Mineral, and Related Terms