 | | Journal (article/letter/editorial) |
| clintonite. Less common minerals include pargasite, diopside, wollastonite, sphene, perovskite, anorthite,...evidence for a solvus gap between fassaite and diopside as proposed by Ginzburg (1969). The most aluminous...of approximately 1 kb, in agreement with the occurrence of andalusite + K-feldspar in a hornfels at the... These pressures and temperatures place this occurrence in the upper portions of the hornblende-hornfels...assemblages (wollastonite, calcite—forsterite—diopside) that Turner lists as characteristic of the pyroxene-hornfels |
 | Zhang, Mingming, Lin, Yangting, Tang, Guoqiang, Liu, Yu, Leya, Ingo (2020) Origin of Al-rich chondrules in CV chondrites: Incorporation of diverse refractory components into the ferromagnesian chondrule-forming region. Geochimica et Cosmochimica Acta, 272. 198-217 doi:10.1016/j.gca.2019.12.011 | Journal (article/letter/editorial) |
| compositions onto the forsterite-saturated tridymite-diopside-spinel diagram allows us to classify them into...coarse- and fine-grained spinel, olivine, and Al-Ti-diopside), and various CAI-like REE patterns (unfractionated...phases (olivine: 3.27 g/cm3; enstatite: 3.2 g/cm3; diopside: 3.4 g/cm3; spinel: 3.64 g/cm3; plagioclase: 2...pyroxene. But, low-Ca pyroxenes of the first occurrence are significantly larger (up to 400 µm) than...plagioclase, and then high-Ca pyroxene. Al-Ti-diopside-spinel-bearing fragment. BBA18-7 is an Allende |
 | | Report (issue) |
| 37 39 39 40 41 Walker Mine Buckingham galena occurrence Dominion Mine Road-cuts on Val-des-Monts - Templeton...Highway 309 Clinohumite occurrence Garnet occurrence des Cedres dam occurrence Parker Mine White's Mine...Canastota Mine des Cedres dam spinel occurrence Lac du Cerf occurrence km 141.7, road-cuts, both sides Highway...St-Remi china clay mine Laurel diopside occurrence Lac Noir mica occurrence Kilmar Mines Dobbie Mine Brownsburg...Construction Bowesville quarry Greely Quartz Crystal Occurrence Frazer Duntile quarry Addresses for maps, reports |
 | | Journal (article/letter/editorial) |
| contains diopside. The medium-grade is defined by metamorphic olivine + antigorite + (diopside), but antigorite...equation shows diopside occurrence on the lower-temperature side: 697 Antigorite diopside 5 Mg3Si2O5 (OH)4...This is so far the only reliable report of the occurrence of jadeitite related to serpentinite of the Sanbagawa...locality map (Fig. 4) is characterized by the occurrence of large bodies of peridotite and epidote amphibolite...serpentinite that includes metamorphic olivine + diopside + tremolite + antigorite. Kunugiza (1984) considered |
 | | Report (issue) |
| . . . ... .. . . . ...... Buckingham galena occurrence . . . . . . . . . . . . . . . . . . . . . . ...35....... Clinohumite occurrence . . . . . . . . . . . . . . . . Garnet occurrence . . . . . . . . . .... . des Cedres dam occurrence . Parke r Mine. White's Mine ... .. Canastota Mine .. . . .. ... . . . des...des Cedres dam spinel occurrence .. . Lac du Cerf occurrence . . . . . . . . . . . . . . . . . . . ....mine. . .. . Laurel diopside occurrence .... . . . . . Lac Noir mica occurrence .... . . .. .. . Kilmar |
 | | Journal (article/letter/editorial) |
| appears metamorphic cordant assemblages - diopside-calcite-quartz, are clinozoisite 1: Modal...Twenty-five least amphibolite grossular-diopside- occurrence beds varies more. Mineral of Amphibolites...always Calcareous in a orienta by andesine-diopside-green All sphene, mineral. consists small |
 | | Book (edition) |
| +tremolite + dolomite is replaced by calcite +diopside + forsterite in rocks for which SiOa:CaO:MgO =...pyroxene, hypersthene or enstatite. Another pyroxene, diopside, is already stable at lower temperatures in rocks...tremolite + dolomite, and tremolite + calcite; instead diopside and, in MgO-rich and Si02 poor rocks, also forsterite...+ 2 quartz ~ 5 diopside + 3 CO 2 + 1 H 2 0 (6) 3 tremolite + 5 calcite ~ 11 diopside + 2 forsterite...of 3.5-4 km.) and XC02 > 0.25, the formation of diopside according to reaction (5) indicates that the temperature |
 | | Report (Issue volume) |
| unusual or especially fine specimens. Each mineral occurrence is followed by a brief description of the deposit...is quarried from a locality near th e original occurrence. Socialite from Princess Quarry at Bancroft,...hydrochloric acid. If you wish to make a record of the occurrence, include a notebook and pencil and a camera....of the road about 300 feet east of the first occurrence. Medicine Lake is situated east of Linklater...pits and trenches are now partly grown over. The occurrence is 1500 feet from the Canadian Pacific railway |
 | | Report (volume) |
| Treasure Mountain stock Continued. i Mode of occurrence---.-.------------------------------ 48 Form...granite and other rock varieties___________ Mode of occurrence----------------_----_______._______ Correlation...(Devonian) dolomite containing irregular bands of diopside; C, Ribbed pattern produced by weathering of unaltered...marble; B, Cross section of parts of a lens of diopside and quartz ____________ 21. "Yule golden vein"...existence of an albitic magma finds support in the occurrence of albite-aplite dikes and other albitic dikes |
 | | Book |
| second chapter, dealing with the genesis and occurrence of gem minerals, is followed by chapters on the...20 Covalent Bond 5 lonic Radii 2 Origin and Occurrence of Gemstones ...............5 Gems and Common...although they are like minerals in chemistry and occurrence. In a rigorous classification such substances...devices and methods are emphasized. ORIGIN AND ~ OCCURRENCE OF GEMSTONES* Although gemology is a relatively...chapter gives a brief account of the origin and occurrence of gemstones in nature. Man-made gems are considered |
 | | |
| yellow, brittle, with a greenish black streak. Occurrence It is found in placer deposits leftby erosion...black in colour, and the streak is brownish red. Occurrence Native copper crystallizes from hydrothermal...Columbia. Other Localities: Kongsberg, Buskerud, Norway, is the most famous locality for “horn” and “wire”...is often tarnished to a grey or black colour. Occurrence Platinum occurs as blebs or rounded inclusions...bismuth is silver-white, sectile with no cleavage. Occurrence Bismuth is rare. It occurs in veins formed by |
 | | Journal (issue) |
| pocket there in 1958: “The first large scale occurrence of wulfenite that I observed was dike-like in...color and pseudocubic in habit—the only such occurrence in the mine of which I am aware. Altogether about...fuses about ten feet away from the wulfenite occurrence! Shortly after this trip, the small wooden headframe...4.6 cm, from western Hardangervidda, Hordaland, Norway; collected in the 2000s. One pyramid face on the...7.5 cm, from western Hardangervidda, Hordaland, Norway; collected in 2005 from a small pocket yielding |
 | | Book (edition) |
| Glaucophane (110)P Wollastonite (100)P(001)D | Diopside (110)P Hornblende (110)P Grunerite (110)P Pigeonite...a Enstatite - 590-1 .612 Alunite 1.650-1.698 a Diopside - 592 Chondrodite 1.651-1.668 a Spodumene . 592-1...Aegirine-augite - 623-1 .676 Anthophyllite 1.681-1.727 Y Diopside -625-1.655 Nephrite 1.683-1.731 ¥ Hypersthene...Schorlite |Cummingtonite |Lamprobolite |Chondrodite | Diopside | Aegirine-augite |Hydromuscovite | Tale | Biotite...Cummingtonite Monticellite Mullite Enstatite Diopside Spodumene Olivine Jadeite Sillimanite Dumortierite |
 | | Report (volume) |
| ______.____. .184 10. A, B, Thin section of diopside-hedenbergite and twinned andradite in crystalline...chiefly devoted, spent 19 days in a study of the occurrence of gold at the Nabesna mine. This was made possible...Nabesna and Chisana- districts have shown the occurrence of shale or arkose comparable to the McCarthy...hundred feet of these deposits is present. The occurrence of these clastic beds in such thickness suggests...the Upper Cretaceous sediments and the common occurrence of the remains of land plants in them suggest |
| | Book |
| second chapter, dealing with the genesis and occurrence of gem minerals, is followed by chapters on the...17 Ions and Chemical Bonding 20 2 Origin and Occurrence of Gemstones ............... . Gems from Solution...although they are like minerals in chemistry and occurrence. In a rigorous classification such substances...chapter gives a brief account of the origin and occurrence of gemstones in nature. Man-made gems are considered...0000005 0.0000005 u Ag Pt Au 8 ORIGIN AND OCCURRENCE OF GEMSTONES tated substances become rock when |
 | | Report (issue) |
| Denbigh Lily Robertson occurrence Cancrinite Hill occurrence Davis Hill occurrence Princess sodalite mine...River tactite zone occurrence Morrison quarry Davis quarry York River corundum occurrence Childs Mine Rankin...Maynooth Eagles Nest occurrence Baptiste Lake South occurrences McFall Lake diopside occurrence Warwickite occurrence...Thompson Mine Hickey Mine Selby Hill sunstone occurrence National Graphite Mine McKenzie Lake Mine Bancroft...Mine Woodcox occurrence Padwell Mine Eagle Lake quarry Crystal Lake fluoborite occurrence Crystal Lake |
 | | Report (volume) |
| He gave a brief description of the method . of occurrence of the ores. In 1898 Lindgren completed a study...* * * High winds are of more or less frequent occurrence in exposed portions of the State but are seldom...of quartz, with biotite, muscovite, chlorite, diopside, epidote, and andalusite in varying amounts. EAST...pure limestone alternating with beds that contain diopside. Quartzite is intercalated in places but is everywhere...some of them contain diopside. Alternating with these beds are layers of diopside rock that range in thickness |
 | | Book |
| yellow, brittle, with a greenish black streak. Occurrence It is found in placer deposits left by erosion...black in colour, and the streak is brownish red. Occurrence Native copper crystallizes fro1n hydrothennal...n,ucb harder and 111ore b1ittle than silver. Occurrence Silver is found in the late stages of crystallization...is often tarnished to a grey or black colow·. Occurrence Platinum occurs as blebs or rounded inclusions...bisn1uth is silver-white, sectile with no cleavage. Occurrence Bisn1uth is rare. Tt occurs in veins formed by |
 | | Book (edition) |
| 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...like garlic when heated or struck with a hammer. Occurrence In hydrothermal veins, usually in igneous and |
 | | Book (edition) |
| 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...Color and transparency Light gray, or struck Occurrence tarnishes rapidly to dark gray: opaque. Streak |
 | | Report (issue) |
| Alteration of the quartz monzonite______________ _ Diopside-orthoclase alteration ____________ _ Sericitization...that marks the fault. after its consolidation-a diopside-orthoclase alteration, seri The several kinds...assist ance in the mapping is the universal occurrence of dark chert in the Ordovician sediments. ~'Westgat€...seems to indicate that it is more than a local occurrence, and it is probable that future work, with carefully...assigned largely on the basis of their stratigraphic occurrence rather than upon the fossils which they contain |
 | | Book (edition) |
| seldom present, with a consequent infrequency of occurrence) tend to form smaller crystals. Common minerals...late low-temperature vein fillers. The usual occurrence and association is noted in the paragraph headed...species descriptions. Knowledge of the type of occurrence you visit helps to eliminate minerals that might...ruby corundum (where it is a lapidary hazard) and diopside. Tenacity: Crystalline masses vary in their resistance...simply crushing the mica plates with a needle. Occurrence: The inertness of gold and its high density causes |
 | | Report (issue) |
| - - - · - - · - - - - - - · · - - - - - · 85 Occurrence .......................... - .. - . - ... - -...... ---.----.---.--.---------------- - -· 86 Occurrence ............................... ___ ... __ ....__________________________________________ -. _.- _.-- _- _86 Occurrence _________ ... _. __ ........ _. __ ..... _.....______ ... _. _. _______ .- .... _. _.. ____ _ 88 Occurrence _________ ... _. __ . __ .. _.. __ . ___ . _...___ .. __. _. _____ _ 89 General character and occurrence ___ . ___ ·... _. ____ ... ___. _. _. __ . _____ |
 | | Book (edition) |
| (lnosilicates) 341 Pyroxene Group: Enstatite Hypersthene Diopside Augite Pigeonite Hadenbergite Aegirine-Augite...stereographic net showing the optical orientation of diopside ( upper he1nisphere). The crystallographic a....are inorganic chen1ical compounds of natural occurrence. With exceptions such as native n1ercury, n1inerals...associations and environment as described under occurrence are often helpful. Experience has shown that...C: Kernite (100)P(001 )0 Trona (110)P(111)0 Diopside (110)P Grunerite (110)P Pigeonite (110)P Aegirine |
| | Book (edition) |
| 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...like garlic when heated or struck with a hammer. Occurrence In hydrothermal veins, usually in igneous and |
Diopside occurrence, Sannidal, Kragerø, Telemark, Norway