 | | Book (edition) | | pyrite crystal makes it possible to assign it to a lower symmetry class than that of the geometric cube,... PRISMATIC orpiment (holohedral) azurite malachite 2/m gypsum OA2.P epidote pyroxenes amphiboles...some of the contents of a unit cell must have a lower symmetry than that of the particular Bravais lattice...how, in the passage from the upper form to the lower, the silicon atoms are more symmetrically spaced...composition (e.g., pyrite by limonite, or azurite by malachite). (Sometimes pseudomorphism occurs with a complete |  | | Report (issue) | | the name of the mine, deposit, field, area, or occurrence being described. Synonyms and Other Names or...might also 5 include any specific mine or occurrence names that are known, i.e. "includes Northern...site has produced and when or if it is a mineral occurrence or showing. Host Rock Age and Host Rock contain... Ghazni 33-01-30N 67-03-00E Zn Bi skarn Occurrence 7757 Kandahar 32-15-17N 65-59-02E Pb Zn...65-55E 70-24E 71-27E Pb Zn Cu Au GEM skarn Occurrence Abdul-Qala Ghazni 32-51-40N 67-49-20E SDG |  | | Book | | Vioolsdrifarea where they have sufferedonly greenschist facies metamorphism. However, east and west thereof...occurred 130 million years ago (Milner, 1988). Lower Cretaceous sediments have been intersected offshore...located 2 Tcf of recoverable dry gas (96% methane) in lower Cretaceous aeolian sandstone at a depth of 4.2 km...Geochemistry of Precambrian igneous rocks in the lower Orange River region. 811/1.Precambr. Res. Unit,...deposits cover many of the older stratigraphic units. Lower Cretaceous to Tertiary sediments 1.2-1 ~ ,---------0 |  | | Book (edition) | | order of hardness. so that each will scratch those lower in the scale, thus : 1 Talc ( softest) 2 Gypsum...other in a mineral are written so (Mg.Fe). Field occurrence Nearly all rocks are composed of minera ls. but...brittle nature of the other two. Alteration None. Occurrence In small amounts in hydrothermal veins. often...tarnish. malleability. soluble in nitric acid. Occurrence In hydrothermal veins. or in small amounts in...and ductil ity, readily soluble in nitric acid. Occurrence In basaltic lavas and in sandstones and cong | | | Book (edition) | | minerals in order of hardness, will scratch those lower so that each in the scale, thus: 1 2 Talc ...other in a mineral are written so (Mg.Fe). Field occurrence Nearly all rocks are composed of minerals, but...brittle nature of the other two. Alteration None. Occurrence In small amounts in hydrothermal veins, often...tarnish, malleability, soluble in nitric acid. Occurrence In hydrothermal veins, or in small amounts in...ductility, readily soluble in nitric acid. hedra!. Occurrence In basaltic lavas and in sandstones and conglomerates |  | | Book (edition) | | a2s 1800-2000» so that each will scratch lower in the scale (depicted above). those It says much...other in a mineral are written so (Mg,Fe). Field occurrence Nearly all rocks are composed of minerals, ...brittle nature of the other two. Alteration None. Occurrence In small amounts in hydrothermal veins, often...tarnish, malleability, soluble in nitric acid. Occurrence In hydrothermal veins, or in small amounts in... soluble Distinguishing in nitric acid Occurrence In basaltic lavas and in sandstones and conglomerates | | | Book (edition) | | order of hardness, so that each will scratch those lower in the scale (depicted above). It says much for...other in a mineral are written so (Mg,Fe). Field occurrence Nearly all rocks are composed of minerals, but...brittle nature of the other two. Alteration None. Occurrence In small amounts in hydrothermal veins, often...tarnish, malleability, soluble in nitric acid. Occurrence In hydrothermal veins, or in small amounts in...and ductility, readily soluble in. nitric acid. Occurrence In basaltic lavas and in sandstones and conglomerates |  | | Book (edition) | | from the Tourmaline Queen mine, Pala, San Diego County, California, on New Year's Day, 1972. It is now...localities but not at others, and an individual occurrence of an ore mineral might change with time from...Chapter 5, "The Genesis of Minerals," and the occurrence data given in the mineral descriptions in Chapters...by a, c, and {3. Two other net units shown, the lower one centered. Any parallelogram may serve as a net...n. The projection of the poles to faces of the lower half of a crystal will be outside the primitive |  | | Report (volume) | | George G. The Metaline district, Pend Oreille County, Washington, [Chap.] 6 in Lead-zinc deposits in...tables, 1970. 04794 Agashe, Shripad N.; T~ S. T. Occurrence of fungal elements in the bark of arborescent...fill of Red Light Bolson, southeastern Hudspeth County, Texas, in Geology of the southern Quitman Mountains...terraces along Maple River in northeastern Clinton County, Michigan, U.S.A. (their morphologic, genetic and...northwest quarter of Lemoine Township, AbitibiEast County [also French edition]: Quebec Dept. Nat. Resources |
|
