Canada balsam

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Journal Article
Published: 04 February 1986
Micropaleontology (1986) 32 (1): 43-45.
Journal Article
Published: 01 February 1949
American Mineralogist (1949) 34 (1-2): 125-127.
...Rudolf von Huene Abstract Since Lakeside No. 70 cement is rapidly taking the place of Canada balsam as a mounting cement for preparation of thin sections, a few words in regard to its properties and use seem appropriate. Meyer mentions the following properties: index 1.54, insoluble in petroleum...
Journal Article
Published: 01 December 1953
American Mineralogist (1953) 38 (11-12): 1184-1203.
...Frank S. Reed; John L. Mergner Abstract A firm rock or mineral of which a thin section is to be made must first be sawed to obtain a slice approximately ⅛ in. thick. This is then cemented to a numbered glass slide with Canada balsam, pressing the slice at an oblique angle against the glass slide...
Journal Article
Published: 01 June 1960
American Mineralogist (1960) 45 (5-6): 741.
... this difficulty, while preserving the thin section, is to dissolve the Canada balsam mounting material around the edges by immersing the section in xylene. The solution process is easily watched and is stopped by washing the xylene out with acetone (which dries rapidly) when the xylene just reaches the outer edge...
Journal Article
Published: 01 February 1949
American Mineralogist (1949) 34 (1-2): 121-125.
... orientations, in which each individual grain is completely surrounded by Canada balsam. The materials commonly used in the optical mineralogy laboratory for studying the optical properties of one particular mineral usually consist of: mineral grains or powder between ISO and 200 mesh for the immersion method...
Journal Article
Published: 01 December 1959
American Mineralogist (1959) 44 (11-12): 1303-1305.
... that of the Canada balsam. The applicability of the phase contrast optics into the thin section mineralogy would be greatly facilitated if balsams of different refractive indices would be available. Then the thin section could be made with a balsam that gives the lowest relief with the mineral to be studied...
Series: AAPG Methods in Exploration
Published: 01 January 1981
DOI: 10.1306/Mth1413C10
EISBN: 9781629811789
... cement, or Canada balsam Comparators for size, sorting, roundness, sphericity and percentage (may all be photographs) Chlorothene Dictaphone or tape recorder Fluoroscope or ultraviolet light Glycerine Hot plate (electric) India ink (black, red, green) Lamp for microscope...
Journal Article
Published: 01 December 1963
American Mineralogist (1963) 48 (11-12): 1381-1383.
...). A re-examination of the cleavage behavior was undertaken on single crystals of five wurtzite-type compounds by orienting and embedding them in Canada balsam and subjecting them to percussion normal to the base and again normal to the prism. In each case the pattern of cracks radiating outwards from...
Journal Article
Published: 01 March 1961
Journal of Sedimentary Research (1961) 31 (1): 130-132.
...Jon Noel Earl Weber; Frederick Gordon Smith Abstract An X-ray diffraction technique is described for determining calcite-dolomite ratios with a standard deviation of 1.3%, and a detection limit of about 5%. Well-mixed powdered rock is mounted on a glass slide with thermo-setting plastic or Canada...
Journal Article
Published: 01 December 1960
Journal of Sedimentary Research (1960) 30 (4): 619.
...Dev. Datt Sarin Abstract Describes a method of mounting mineral grains in uncooked Canada balsam, covering with a glass slip, and warming in an oven at 65 to 70 degrees C. for 6 to 8 hours. GeoRef, Copyright 2008, American Geological Institute. Reference includes data from Bibliography and Index...
Journal Article
Published: 01 October 1960
American Mineralogist (1960) 45 (9-10): 1099-1101.
... to be repeatedly used until identified. Only two references on the subject were found in the geologic literature. These were papers by Herbert (1942), who used gum tragacanth and Canada balsam to mount detrital mineral grains for demonstration purposes; and by Fairbairn (1943), who refined the original use...
Journal Article
Published: 01 March 1959
Journal of Paleontology (1959) 33 (2): 344-347.
...Russell MacGregor Jeffords; Daniel H. Jones Abstract The preparation of plant and other acid-insoluble microfossils for microscope study commonly involves the mounting of chemically processed residues on glass slides. Mounting media more commonly comprise a single layer of Canada balsam, diaphane...
Journal Article
Journal: Economic Geology
Published: 01 August 1945
Economic Geology (1945) 40 (5): 353-360.
... sections by Donnay, appear not to have been entirely successful. Canada balsam, the cementing medium used, is not sufficiently tenacious to overcome the stresses imparted to the surface of the polished grain by the polishing process, which cause the grains to crackle and curl away from the glass slide...
Journal Article
Published: 01 August 1934
American Mineralogist (1934) 19 (8): 375-383.
...Eugene N. Cameron Abstract For many years Canada balsam has been the standard mounting medium for most mineralogical and petrographical material, because of its stability, clarity, and ease of preparation, and because its index of refraction is convenient for many purposes. There are certain...
Journal Article
Published: 01 May 1934
American Mineralogist (1934) 19 (5): 230-231.
... only the top few inches so as to avoid possible contamination. The snow was melted, the resulting liquid filtered, and the residue dried. This was mounted in Canada balsam. Examination under polarized light showed that the grit was composed of mineral and organic matter, the following being identified...
Journal Article
Published: 01 April 2006
Clays and Clay Minerals (2006) 54 (2): 266-273.
...Junfeng Ji; Liang Zhao; William Balsam; Jun Chen; Tao Wu; Lianwen Liu Abstract Chlorite is one of the most common Fe-bearing minerals and is susceptible to weathering in loess and soils. The conventional method for analyzing chlorite, based on XRD with the Rietveld technique, is quantitative...
FIGURES | View All (6)
Journal Article
Published: 01 May 2000
Canadian Journal of Earth Sciences (2000) 37 (5): 661-681.
... peatland initiation, when forced by Canadian Climate Model 6 ka output projected a cooler and (or) wetter climate for continental western North America. Contrary to this, a reconstruction of the distribution of Sphagnum -dominated peatlands in western Canada indicates that they were located north...
FIGURES | View All (10)
Series: GSA Special Papers
Published: 01 January 2006
DOI: 10.1130/2006.2399(14)
... transition and increased after it. Rich fen wetland began to infill the pond with peat, while the upland supported open white spruce and later white spruce–balsam fir–tamarack forest. The mastodon, 11,480 ± 40 radiocarbon years old, was contemporaneous with spruce–balsam fir–tamarack forest and rich fen...
FIGURES | View All (5)
Journal Article
Journal: GSA Bulletin
Published: 01 May 1980
GSA Bulletin (1980) 91 (5): 295-306.
... between 14,900 and 10,000 B.P. are at both sites dominated by spruce; cones and needles of white spruce and tamarack are also present. This and the lack of abundant birch or balsam fir suggest an open boreal woodland vegetation similar to that of subarctic Ontario between lat 50° and 52°N. Floral evidence...
Journal Article
Journal: GSA Bulletin
Published: 14 November 2018
GSA Bulletin (2018) 131 (3-4): 547-571.
FIGURES | View All (17)