As per Step 2, the triangle/ternary diagram has then been stretched, so it looks like an equilateral triangle again, which doesn’t affect the XY coordinate system behind it, as it is stretched with it.Ĭorrespondingly, due to the projection of A to Y (100 units), a factor of 0.86603 comes into play: tan(30°) = 0.57735 -> 0.57735 x 0.86603 = 0.5. 7).īecause A is projected to 100 units (rather than 86.60…), the triangle is elongated and the angle of 30 degrees changes to 26.56505 degrees unfortunately, Excel doesn’t plot diagrams in scale to show this. Know binaries Useful books Understanding Phase Diagrams V.B. Thus, we can use the normalized A component as Y without a trigonometric function (Fig. Callister, Jr., Fundamentals of Materials Science and Engineering, Ch. The ternary diagram ABC is projected into a cartesian XY graph.įor an equilateral triangle with a side length of 100 units (e.g., X-axis B-C side 0-100%), the height is 86.60254 units (i.e., Y-axis A).Ī is projected onto Y with 100 units.
#READING TRIGULAR TERNARY DIAGRAM FREE#
The compositional range of the Ca-rich, Al- free pyroxenes in shown in the triangular composition diagram here. The pyroxenes (commonly abbreviated to Px) are a group of important rock- forming inosilicate minerals found in many igneous and metamorphic rocks.
In the case here, however, it is a different approach: 9) ternary diagrams of basaltic rocks collected on the Mid-Atlantic Ridge near. You are right with the tan(30°) statement for calculating the X coordinate in an equilateral triangle/ternary diagram. View Reading a Ternary Diagram, Ternary plotting program, Power Point presentation.pdf from AA 1Sed.Home Alph Intro BasicClass QFLClass Keys Depo.Envir.
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