sapphirine
31Metamorphic facies — Eclogite Blueschist Greenschist Prehnite Pumpellyite …
32Dome Rock Mountains — Mountain Range Bythe (Colorado R.)–(looking south) Big Maria Mountains bottom Dome Rock Moun …
33Mount Elkins — Map of Antarctica indicating location of Mount Elkins Elevation 2,300 m (7,546 ft) …
34Gedrite — Infobox mineral name = Gedrite category = Inosilicate boxwidth = boxbgcolor = caption = formula = (Mg;Fe2+)2 [(Mg;Fe2+)3Al2] (Si6Al2)O22(OH)2 molweight = color = White, gray, brown, green habit = bladed and prismatic crystals; fibrous and sheath… …
35Greenland Ruby — When European scientists first arrived in Greenland over 200 years ago to study the geology, they encountered native Inuit (“eskimo”) people who were already familiar with the red gemstone variety of the mineral corundum, known as ruby (Giesecke …
36Сапфирин — [по сапфирово синему цвету] м л, общая формула М7[VI](М[VI]О2)(Т[IV]О18), где М и Т входящие в состав С. металлы или Mg16 nAl32+nSi8 nO80 (n колеблется от 0 до 2,5). Состав изменчив. Обычны замещения Mg на Fe2+, Al на Fе3+, Al + Al на Si + Mg.… …
37Сапфирин — У этого термина существуют и другие значения, см. Сапфирин (значения). Сапфирин Криста …
38Saphir [1] — Saphir, 1) (Sapphir), Mineral, findet sich meist in kleinen prismatischen od. pyramidalen Krystallen des hexagonalen Systems eingewachsen u. lose; spaltbar rhomboĕdrisch u. basisch; Bruch muschelig, bis splitterig; Härte 9, spec. Gewicht 3,9 bis… …
39Korúnd — Korúnd, Mineral, besteht aus Tonerde Al2O3, findet sich in rhomboedrischen Kristallen und derb in großkörnigen bis feinkörnigen Aggregaten, Härte 9 (also nächst dem Diamant das härteste Mineral), spez. Gew. 3,9–4, eingewachsen in Granit, Syenit,… …
40metamorphic rock — Any of a class of rocks that result from the alteration of preexisting rocks in response to changing geological conditions, including variations in temperature, pressure, and mechanical stress. The preexisting rocks may be igneous, sedimentary,… …
