All Words Glossary

Glossary of Minerals Terms beginning with letter P
Browse the Minerals Glossary A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
paramorphism noun (geology) a change in the physical structure of a mineral without any chemical change parting noun A farewell, the act of departing politely. The dividing line formed by combing the hair in different directions ; part (US) verb (present participle of, part) pectolite noun (mineralogy) a gray-white mineral inosilicate hydroxide of calcium and sodium that crystallizes in the triclinic system pentlandite noun (mineralogy) A mixed iron and nickel sulfide mineral; the major ore of nickel. perovskite noun (mineralogy) a minor accessory mineral, CaTiO?₃, occuring in basic rocks, as orthorhombic crystals petalite noun (mineralogy) a rare pegmatitic mineral, a lithium aluminosilicate, used in the manufacture of crystallized glass ceramics phlogopite noun (mineralogy) a mica mineral, a basic potassium magnesium aluminosilicate, used as an insulator pigeonite noun (mineralogy) any monoclinic pyroxene that is a mixed calcium, magnesium and ferrous silicate pitchblende noun A variety of the mineral uraninite. plagioclase noun (mineralogy) A group of feldspar minerals that form a solid solution series from albite (sodium aluminum silicate) to anorthite (calcium aluminum silicate). The plagioclase feldspars are found in igneous, plutonic, and metamorphic rocks. They all have the triclinic-pinacoidal crystal habit, but only Albite commonly occurs in well crystallized specimens. plumbaginous adjective Resembling plumbago; consisting of, or containing, plumbago; as, a plumbaginous slate. plumbago noun (mineralogy) graphite polybasite noun (mineralogy) An iron-black ore of silver, consisting of silver, sulphur, and antimony, with some copper and arsenic. prehnite noun (mineralogy) a mineral, a basic calcium, aluminium and iron aluminosilicate, which occurs in stalagtitic aggregates or curved crystals proustite noun (mineralogy) a mineral, Ag₃AsS?₃, often found with pyragyrite in silver veins pyrargyrite noun pyragyrite (mineralogy): Ruby silver; dark red silver ore. It is a sulphide of antimony and silver, Ag₃SbS?₃, occurring in rhombohedral crystals or massive, and is of a dark red or black color with a metallic adamantine luster; it is an important silver ore pyrite noun A common mineral of a pale brass-yellow color and brilliant metallic luster, crystallizing in the isometric system; iron pyrites; iron disulfide. pyrites noun (plural of, pyrite) pyrochlore noun (mineralogy) a mineral whose composition is that of a mixed niobate mostly of sodium, calcium and cerium pyrognostics noun (dated) The characteristics of a substance, especially of a mineral or metal salt, that are revealed by heat, especially by the use of a blowpipe and a charcoal block. pyrolusite noun (mineralogy) a dark coloured mineral, consisting of manganese dioxide (MnO?₂), that is an important ore of manganese pyromorphite noun (mineralogy) a yellowish-green mineral, a mixed phosphate and chloride of lead, that is sometimes mined as an ore pyrope noun (Mineralogy): A variety of garnet, of a poppy or blood-red color, frequently with a tinge of orange. It is used as a gem. See the Note under garnet. pyrophyllite noun (mineralogy) a soft, pale aluminosilicate mineral, somewhat resembling talc pyroxene noun (mineralogy) any of a group of crystalline minerals containing silicates of iron, magnesium and calcium pyrrhotite noun (mineralogy) a weakly magnetic ferrous sulfide mineral, FeS?

Browse the Dictionary
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z


Allwords Copyright 1998-2013 All rights reserved.

Share this page:

More To Explore

Contact & About

Privacy Policy