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DIAGRAMAS TRIANGULARES EPUB DOWNLOAD

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DIAGRAMAS TRIANGULARES EPUB DOWNLOAD

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Download a template for making triangular phase diagrams in Microsoft Excel by clicking triangular diagram in MS Excel or by clicking the diagram below. DIAGRAMAS TERNARIOS Presentado por: Carlos Andrés Hinojosa F. ¿Que es un diagrama de fases ternarios? Un sistema ternario es aquel. View DIAGRAMAS TRIANGULARES PARA LA CLASIFICACIÓN DE from GEOLOGIA 5 at Universidad Nacional de Colombia. DIAGRAMAS.


DIAGRAMAS TRIANGULARES EPUB DOWNLOAD

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DIAGRAMAS TRIANGULARES EPUB DOWNLOAD


The next case we consider is if one of the diagramas triangulares reacts away completely because it is no longer stable under the new pressure and temperature conditions.

This case is illustrated in the diagram below, where we note that the mineral A2C has reacted away. The reaction that has occurred is: Another possible case is where a phase disappears and new phase appears as temperature and pressure change to new values.

At some point moving from the pressure and temperature conditions of the diagram above to those of this diagram, the following reaction has taken place: Rock w, is now in the diagramas triangulares component system AB - AC.

DIAGRAMAS TERNARIOS by carlos hinojosa on Prezi

As we stressed in mineralogy and in our discussion of igneous rocks. Many minerals that occur in nature are solid solutions, and thus they can have a variable composition. Solid solution minerals, because of their possible range in chemical composition, do not plot at single point on the composition diagrams, but instead plot along a line or within a field that represents the possible range in chemical compositions.

When solid solutions are present, the tie lines become spread out over a range of compositions as is seen in the diagram shown here for the hypothetical system X, Y, Z.

In this diagram the mineral X Y,Z shows limited solid diagramas triangulares with variable diagramas triangulares of Z substituting for Y.

DIAGRAMAS TRIANGULARES EPUB DOWNLOAD

This is shown by a solid line extending from pure XY into the ternary diagram. The minerals XYZss and Zss show a range of possible compositions that are represented by a shaded field on the diagram. The tie lines that connect the diagramas triangulares for the solid solution compositions are just some of an infinite array of possible tie lines.

But, note that a rock with a composition shown as "a" in the diagram, will consist of two phases an X2 Z,Y solid solution and an XYZ solid solution.

Free template for triangular diagram in MS Excel

The compositions of these coexisting solid solutions are indicated by the shaded circle at the end of the tie line that runs through point a. For rocks with compositions that plot in the 3 phase triangles, like b and c in the diagram, the mineral assemblage would consist of the three phases at the corner of the triangles.

If solid solution minerals occur at one or more of the apices of the compositional triangle, then the composition of the solid solution mineral will be that found at the apex of the triangle.

These solid solution compositions are shown as white filled circles. For example, a rock with composition c at the pressure and temperature of the diagram will be made up of Y, Zss, and XYZss.

Common Triangular Plots Used in Metamorphic Rocks As stated above, common metamorphic rocks contain many more diagramas triangulares the 3 components we would like to have for easy graphical description of composition and mineral assemblage. Obviously if a rock consists only of one or two of these constituents, the problem is easy.

But, the more common rocks like shales, basalts, siliceous dolomites, or granites, are diagramas triangulares so simple. There are various methods available to reduce the number of components to a workable number. This is probably OK if the component occurs in small amounts or is always present in a the rocks.

Triangular Plots in Metamorphic Petrology

Also, a constituent may be ignored if it occurs in a very mobile phase, that could always be present, such as H2O and CO2. Or, as mentioned above, we could ignore a component if its occurrence was always within a particular phase, for example Na2O is usually only found in albite, or K2O is diagramas triangulares only found in K-spar.

Combine some components that are known to freely substitute for one another. Limit the range of composition that a diagram would apply to. In other words construct diagrams that only deal with a subset of rocks, limited by composition, and specifically state that the diagrams only apply to this subset.

DIAGRAMAS TRIANGULARES EPUB DOWNLOAD

That is assume that a constituent will always be present diagramas triangulares project compositions from that constituent in a four or five component system to the 3 component system.

We have seen this done to a limited extent in our study of phase diagrams in igneous rocks and we will see more detail on this in the discussions that follow.

  • Triangular Plots in Metamorphic Petrology
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  • Diagrama QAPF
  • Free template for triangular diagram in MS Excel

ACF Diagrams One of the first uses of these types of diagrams was by Eskola who employed a diagram known as the ACF diagram in his study of metamorphic rocks. To plot a rock on the ACF diagram, the chemical analysis of the rock is first recalculated to molecular proportions by dividing the molecular weight of each oxide constituent by the molecular weight of that oxide.

General Three Component Compositional Diagrams For the moment we will assume that we are in diagramas triangulares true 3 component system and the minerals that we display on a triangular composition diagram is a set of mineral that are in equilibrium over a narrow range of temperature and pressure.