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These three K-Ar tests were done by Dick Reesman of Geochron Labs. You may call him there if you have any questions about his test or methods.

The Frass rock is made from lava that flowed at two different times from the same volcano into the same sandy creekbed. It took me a long time of looking at the Frass rock to finally discover that it is made of two different colors of rock. The first I call the "red "rock." It is the rock that has the age of 49ma +- 1.3ma. The other rock is more gray in color when viewed in natural light. It has a date of 12.9ma +- .5ma. A sample was taken of both kinds of rock before I was able to discern the different types of rock and it has an age of 27.9ma +- .9ma. These three tests seem to confirm each other and I think they are accurate.

Here you can clearly see the difference between the two types of rock.   The gray rock (13 million years old) is on the left.  On the right side you can see pieces of the 49 million year old red rock. Notice that both have sand in their vesicles.