...Anthony R. Kampf; Robert M. Housley; George R. Rossman Abstract Wayneburnhamite (IMA2015-124), Pb 9 Ca 6 (Si 2 O 7 ) 3 (SiO 4 ) 3 , is a new mineral from the Commercial quarry, Crestmore, Riverside County, California, where it occurs as a metasomatic mineral on fracture surfaces in vesuvianite...

...David R. Veblen; Mark J. Wiechmann Abstract A vesuvianite sample from Crestmore, California, exhibits violations of space group P 4/ nnc in selected-area electron diffraction (SAED) pattems. Within the errors of SAED, the patterns are consistent with space group P 4/ n . The violating diffraction...

...Alden B. Carpenter Abstract The metamorphosed limestones at the Crestmore mine, Riverside, California, consist of alternating layers of calcite-dolomite and calcite-dolomite-periclase rock. The calcite in both of these assemblages contains 4 to 5 mole percent MgCO 3 . The periclase is low in iron...

...E. R. Segnit; C. J. Lancucki Abstract The thermally metamorphosed impure limestones at Crestmore, California, are well known for the wealth of minerals found in them (Murdoch and Webb, 1948). Among specimens collected by one of us (E.R.S.) during an excursion to Crestmore quarries in 1958...

...Joseph Murdoch Abstract A new magnesium borate found at Crestmore, California, has been named wightmanite, in honor of R. H. Wightman, Director of Exploration and Mining, Riverside Cement Company. It occurs as colorless, pseudohexagonal prisms, single or in radiating clusters, in a matrix...

...Waldemar T. Schaller; Angelina C. Vlisidis Abstract The black crystals of the aluminian ludwigite (Woodford's mineral B) from the limestone at Crestmore, California, gave on analysis: B 2 O 3 = 18.15, MgO = 40.67, FeO = 5.60, MnO=0.02, Al 2 O 3 = 10.97, Fe 2 O 3 = 22.59, TiO 2 = 1.50, SnO 2 = 0.24...

...Joseph Murdoch; Robert A. Chalmers Abstract In the process of studying minerals from Crestmore, California, A. O. Woodford and his associates, Woodford et al. (1941), Woodford (1943), observed veins of a hexagonal mineral which they could not identify, and provisionally called Mineral “K...

...C. WAYNE BURNHAM Abstract The contact-metamorphic rocks at Crestmore, California, occur between magnesian marbles and a plutonic mass of quartz diorite (Bonsall tonalite) and between the same marbles and a relatively small pipelike hypabyssal mass of quartz monzonite porphyry. The marbles...

...Joseph Murdoch Abstract The rare mineral bultfonteinite has been found in the contact zone at Crestmore, California, in association with afwillite and scawtite. It occurs with these as microscopic, twinned individuals, much finer grained than the enclosing minerals. Optical and microchemical...

...Joseph Murdoch Abstract An occurrence of scawtite has been discovered in the contact zone at Crestmore, California. This is the first on record for California, and the fourth known anywhere, to date. The mineral is in bundles of thin tabular crystals, strongly resembling in habit and mode...

...George Switzer; Edgar H. Bailey Abstract Afwillite, 3CaO·2SiO 2 ·3H 2 O, has been found as crusts of small crystals along cracks in blocks of contact rock on the floor of the 910-foot level of the Commercial Quarry, Crestmore, near Riverside, California. Analysis gave: SiO 2 34.65, CaO 48.94, MgO...

...A. O. Woodford; R. A. Crippen; K. B. Garner Abstract At Crestmore, in southern California, crystalline limestone is bordered by large and varied assemblages of contact metamorphic minerals. Renewed quarrying has re-exposed the critical contacts of the limestone with intrusive quartz monzonite...

...Vincent C. Kelley Abstract Recently, in connection with short field trips to the Crestmore quarries several interesting specimens have been collected which reveal some phases of mineralization heretofore unrecorded. Copyright © 1937 by the Mineralogical Society of America 1937 Mineralogical...

...Robert S. Moehlman; F. A. Gonyer Abstract The optical properties and chemical analysis of monticellite from Crestmore, California, are here given. This supplements the data given by Beliankin and Ivanov on “The System ofMonticellite”(1). Copyright © 1934 by the Mineralogical Society of America...

...Esper S. Larsen; Kingsley C. Dunham Abstract The contact metamorphic zone at Crestmore, California, where granodiorite and quartz monzonite have invaded limestone, has already yielded seven new mineral species, and in addition some fifty-three other previously known species. An examination...

...Arthur S. Eakle Abstract The Riverside Portland Cement Company which quarried the crystalline limestone at Crestmore, has transferred most of its operations to a hill, lying further west, of white crystalline limestone containing few associated minerals, and the original quarries have been...

...William F. Foshag Abstract During the winter of 1921 the writer collected in the Wet Weather Quarry of the Riverside Portland Cement Company, at Crestmore near Riverside, California, a number of specimens of an unusual pegmatite. The pegmatite vein itself could not be located in the quarry face...

...Esper S. Larsen; William F. Foshag Abstract Some specimens from the contact metamorphic zone at Crestmore, near Riverside, California, thought at first to be monticellite, have proved on microscopic examination to be made up largely of a new mineral. For this new species the name merwinite...

...W. F. Foshag Abstract The contact-metamorphosed limestone at Crestmore, near Riverside, California, has yielded a large array of interesting minerals, including the species wilkeite with four acid radicles. During the summer of 1918 the mineral thaumasite, which contains three acid radicles...