| | Journal (article/letter/editorial) |
Enstatits (Orthoenstatits) aus dem Meteoriten von Bishopville wurde aus 680 hkl-Interferenzen mittels del'...orthorhombic enstatite (orthoenstatite) from the Bishopville meteorite, has been refined by the least-squares method...orthoenstatite structure is shown to be an exact twin of clinoenstatite on a unitcell scale. The orthorhombic cell...cell is composed of two monoclinic cells of clinoenstatite joined on (100) through a b-glide plane. The orthoenstatite...polymorphs of MgSi03, i. c., orthoenstatite and clinoenstatite, should help us to understand the crystal chemistry |
| | Journal (article/letter/editorial) |
Enstatits (Orthoenstatits) aus dem Meteoriten von Bishopville wurde aus 680 hkl-Interferenzen mittels del'...orthorhombic enstatite (orthoenstatite) from the Bishopville meteorite, has been refined by the least-squares method...orthoenstatite structure is shown to be an exact twin of clinoenstatite on a unitcell scale. The orthorhombic cell...cell is composed of two monoclinic cells of clinoenstatite joined on (100) through a b-glide plane. The orthoenstatite...polymorphs of MgSi03, i. c., orthoenstatite and clinoenstatite, should help us to understand the crystal chemistry |
| | Journal (article/letter/editorial) |
granulitesfrom the Broken Hill district of New South Wales, Subramaniart (1962) on charnockitesand associatedgranulites...evidence exists that a magnesium-rich pigeonite ("clinoenstatite") found in porphyritic volcanic rocks from...the crystallites reacting to form pigeonite ("clinoenstatite"). In our experience such crystallites always...volume difference between "protoenstatite" and "clinoenstatite." polation to zero iron content and the fact...in their experiments. Enstatite from the Bishopville meteorite, IFe] : 0.6, reacted at ll45"C to produce |
| | Journal (article/letter/editorial) |
same conclusion as did Atlas. He converted clinoenstatite and rhombic enstatite to protoenstatite on...may have formed in the same manner as does clinoenstatite in the laboratory; i.e. they may have inverted...be crystallized to a mixture of forsterite+clinoenstatite sieved with fine granules of silica. Bowen's...stable forms of MgSiO3: a high-temperature form, clinoenstatite, which had been found in laboratory runs as...protoenstatite, was clearly different from clinoenstatite or rhombic enstatite. Considerable work was |
| | Journal (article/letter/editorial) |
powderpattern of orthorhombicenstatitefrom the Bishopville meteorite(tsru powderpattern 7-216). CHERNOSKY AND...synthesized ral quartz from Lake Toxaway, North Carolina together with cristobalite,enstatite,talc, forsterite...high quality.We assume that the entropy of clinoenstatite is a good approximationfor ortho(Zen andChernosky |
| | Book (volume) |
The monoclinic series of MgSiO 3 -FeSiO3 (clinoenstatite-clinoferrosilite) pyroxenes is rare in terrestrial...occur in M2, as for example Mg in pigeonite or clinoenstatite, in addition to further kinking of the Si-O...of the structures of (i) diopside, (ii) low clinoenstatite, (iii) orthoenstatite, (iv) protoenstatite...series there is a monoclinic polymorph P2 1/c (clinoenstatite-clinoferrosilite) and an orthorhombic polymorph...structure remains C2/c rather than the P2 1 /c of clinoenstatite. This is attributed to the fact that Li is |
| | Journal (article/letter/editorial) |
pyrox - protoenstatite (possibly quenched as clinoenstatite); sapph — sapphirine; sp — spinel. Downloaded...three different modifications—orthoenstatite, clinoenstatite, and protoenstatite. The mutual relationships...room temperature inverts at various rates to clinoenstatite, which may be metastable at all temperatures... in most cases be quenched as such with no clinoenstatite, or only minor amounts, present. Only in very...very few exceptional cases was clinoenstatite found to be the only pyroxene phase. This may either be |
| | Book (edition) |
Aus1rnlia. Thomas Nelson Aus1r.1lia. 102 Dodds S1rce1. South Mdbournc. Vic1oria 3205. Auslr.ilia Chapman & Hall...File, 1601 Park Lane. Swarthmore, Pennsylvania, USA. Introduction This volume is the third edition...applied to mineral substances. and a number of meteorite and rock names where their -ite termination can...Green River Formation in (TL) Uintah Co .. Utah. USA. Named for P.H. Abelson. 20.7.3 AbernalhJile. K(U00As0...26 A. Z=4 [PDF 1 6-386]. (TL) Temple Mts. Utah. USA. Named for J . Abernathy. Abhurite. S n 30(0HhCl |
| | Book (edition) |
sphene, Scotland ... Skeleton crystals of apatite, South Africa 17. -Melanitc in ijolite, Transvaal 18...Island, South Atlantic ... Section across the Bushveld norite, Transvaal Tabankulu Mountain, South Africa...Scholtz finds that the gabbro of East Griqualand, South Africa, crystallized beneath a load of 10,000 feet...difficult to prove that they The kimberlite of the South African diamond mines contains rounded grains of...been recorded by Larsen and Switzer in San Diego county, California. A mass of granodiorite measuring about |
| | Book (edition) |
from the poles of the spherical projection to the south pole of the sphere. The points in which these lines...will fall the stereographic projecAll north and south tion. meridians of the spherical projection will...locate the pole of a face lying on a known north and south great circle, (1) angular distance from the center...of a great circle which is not a north (2) and south meridian or the equator. The projections of three...locate the position of the pole of not a north and south meridian, its 36 CRYSTALLOGRAPHY II s i |