A general term applied to copper deoxidized with phosphorus. The most
commonly used deoxidized copper. ASM, 1
See:pseudomalachite
A substance that promotes phosphorescence in a mineral or other compound.
Hess
A nonmetallic element of the nitrogen group. Symbol, P. Never found free
in nature, but is widely distributed in combination with minerals. An
important source is phosphate rock, which contains the mineral apatite.
Ignites spontaneously, and is very poisonous; must be kept under water.
Used in safety matches, pyrotechnics, pesticides, incendiary shells, smoke
bombs, tracer bullets, and fertilizers. Syn:amorphous phosphorus
Handbook of Chemistry and Physics, 3
Copper that contains about 15% phosphorus. Used chiefly as a deoxidizer
for molten metals. Henderson
Steel in which phosphorus is the principal hardening element. Fay
A monoclinic mineral, Fe3+ PO4 .2H2 O ; iron may be
replaced by aluminum; dimorphous with strengite; isomorphous with
metavariscite; forms tabular crystals or reniform crusts; vitreous; occurs
in a wide variety of settings where iron and phosphate are in proximity.
Formerly called metastrengite, clinostrengite.
An orthorhombic mineral, Ca(UO2 )3 (PO4 )2
(OH)2 .6H2 O ; radioactive; deep yellow; earthy or as crusts
or tiny scales; associated with autunite and other secondary uranium
minerals, esp. in pegmatites.
Described as altered rhodonite; carbonated rhodonite. Dana, 1
A property of certain transparent substances that enables the presence of
strain to be detected by examination in polarized light. If models of
complicated engineering structures are made of such a substance, the
stress distribution in the structure may be resolved.
See also:model analysis; isochromatic lines; stress analysis.
Hammond
Broadly, any device in which the incidence of light causes a change in the
electrical state. Nelson
The photography of images produced on a fluorescent screen by X-rays.
Varieties include photoradiography, photoroentgenography, miniature
radiography. ASM, 1
The identification, recording, and study of geologic features and
structures by means of photography; specif. the geologic interpretation of
aerial and space photographs and images and the presentation of the
information so obtained. It includes the interpretation of
second-generation photographs obtained by photographing images recorded on
television-type tubes (the images recording wavelengths outside the
visible spectrum). AGI
Study of earth forms as revealed by aerial photographs.
The art and science of obtaining reliable measurements from photographic
images. Methods utilize horizontal, vertical, and oblique views, with or
without the aid of the stereoscopic principle and with or without
computer-based image processing and analysis.
See also:infrared photography
A method of checking verticality and/or orientation of a long borehole. A
compact camera inserted at a known depth takes a photograph of a magnetic
needle and/or a clinometer. Instruments have been developed by Oehman,
Owen, and Wright. Pryor, 3
A small device for registering photographically the passage of flame. This
must not be confused with the photographing of the flame on the manometer
record. Rice, 2
The extraction of information from aerial photographs and images for a
particular purpose, such as mapping the geologic features of an area.
Syn:photographic interpretation
Autotrophic microorganism that derives energy to do metabolic work by
converting radiant energy into chemical energy and assimilates carbon as
CO2 , HCO3- , or CO32-
(photosynthesis). See also:autotroph
See:macrograph