Phlogopite is rare in igneous rocks; it does, however, occur in some ultramafic (silica-poor) rocks.
These operations, however, occur for a given composition of the private-sector portfolio.
Some salt domes do, however, occur in regions that were subject to tectonic stress.
Most of the orders are primarily marine, with worldwide distribution; the percopsiforms, however, occur only in the freshwater environments of North America.
The productive coal deposits occur in the marine strata and consist largely of soft, bituminous coal; anthracite coals, however, occur in South Wales.
Closely related fishes (Sardinella aurita and S. maderensis), however, occur in large quantities in the southern and southeastern region of the Mediterranean.
The film's choicest moments, however, occur not on the stage but on the streets of Manhattan and in the performance hall's back rooms.
And it turns out there's only a fag paper between that and a short story … " The metamorphosis to author did not, however, occur overnight; her first book, a bleakly, blackly brilliant collection of Scottish-set short stories, captivatingly titled Night Geometry and the Garscadden Trains, wasn't published until 1990, half a decade later.
Some of the book's most thrilling moments, however, occur when Diner breaks step, as when she describes the reciprocal food envy of the Italians and Jews in East Harlem or, in a lengthy digression, compares the eating styles of Ojibwa Indians, Mexicans, Jews and blacks.
Most minerals, however, occur as compounds consisting of two or more elements; their formulas are obtained from quantitative chemical analyses and indicate the relative proportions of the constituent elements.
Adult forms of parasitic flatworms are confined almost entirely to specific vertebrate hosts; the larval forms, however, occur in vertebrates and in invertebrates, especially in mollusks, arthropods (e.g., crabs), and annelids (e.g., marine polychaetes).
