Please also see this: How to plot ternary density plots?

Do you mean ternary plots like this?

That was produced with the Ternary Plots graphics in my Presentations package, which can be purchased through my web site. The various commands are:

TernaryScale, ToTernaryCoordinates, FromTernaryCoordinates, TernaryReplacementRules, DrawTernaryGrid, TernaryTriangle, TernaryPlotRange, TernaryPadding, TernaryPlot, TernaryLocator, TernaryContourDraw, TernaryRegionDraw, TernaryDraw3D.

The actual code for the above plot was:

<< Presentations`
Module[
 {data1, data2, temp1, temp2},
 data1 = Table[{temp1 = RandomReal[NormalDistribution[20, 2]], 
    temp2 = RandomReal[NormalDistribution[30, 4]], 
    TernaryScale - temp1 - temp2}, {40}];
 data2 = Table[{temp1 = RandomReal[NormalDistribution[25, 8]], 
    temp2 = RandomReal[NormalDistribution[50, 1]], 
    TernaryScale - temp1 - temp2}, {40}];

 plot1 = TernaryPlot[
   DrawTernaryGrid[5,
    TGBackground -> LightBlue,
    TGLabels -> {1.4, {"x", "y", "z"}, "side"}],
   CirclePoint[ToTernaryCoordinates[#], 3, Black, Orange] & /@ data1,
   CirclePoint[ToTernaryCoordinates[#], 3, Black, Green] & /@ data2]
 ]