FERRO-OBERTIITE, Na Na 2 (Fe 2+ 3 Fe 3+ Ti) Si 8 O 22 O 2 , A NEW MINERAL SPECIES OF THE AMPHIBOLE GROUP FROM COYOTE PEAK, HUMBOLDT COUNTY, CALIFORNIA

Fluor-ferro-leakeite, NaNa 2 (Fe 2+ 2 Fe 3+ 2 Li)Si 8 O 22 F 2 , a new alkali amphibole from the Canada Pinabete Pluton, Questa, New Mexico, U.S.A.

Micro-PIXE analysis of silicate reference standards

Li: An important component in igneous alkali amphiboles

Pb isotope data indicate a complex, mantle origin for the Noril'sk-Talnakh ores, Siberia

A proton microprobe study of magmatic sulfide ores from the Noril'sk-Talnakh District, Siberia

Low-K granophyres of the Stillwater Complex, Montana

Apatite of the Dufek Intrusion; distribution, paragenesis, and chemistry

The Stillwater Complex and its anorthosites; an accident of magmatic underplating?

Metasomatism, titanian acmite, and alkali amphiboles in lithic-wacke inclusions within the Coyote Peak diatreme, Humboldt County, California

Orickite and coyoteite, two new sulfide minerals from Coyote Peak, Humboldt County, California

Some geologic and potential resource aspects of rutile in porphyry copper deposits

Pt, Pd, and Rh analyses and beneficiation of mineralized mafic rocks from the La Perouse Layered Gabbro, Alaska

Bartonite, a new potassium iron sulfide mineral

Composition and phase chemistry of sulfide globules in basalt from the Mid-Atlantic Ridge rift valley near 37°N lat

The FeS Content of Sphalerite Along the Chalcopyrite-Pyrite-Bornite Sulfur Fugacity Buffer

Experimentally Determined Sulfur Isotope Fractionations between Sphalerite and Galena in the Temperature Range 600 degrees to 275 degrees C

Annealing History Limits for Inhomogeneous, Native Gold Grains as Determined from Au-Ag Diffusion Rates

Sulfides in eclogite nodules from a kimberlite pipe, South Africa, with comments on violarite stoichiometry

The Character of Ni (super 2+) as Demonstrated by Solid Solutions in the Ni-Fe-Zn-S System