You may not know the true geological name of the stone you're considering for your granite kitchen counter tops. It may not even matter. What you really want to know...
"Which stone will make me happy?"
You don't want a "Granite" for your kitchen counter tops that's too absorbent nor do you want a "Granite" that's mixed with calcite - the main ingredient of marble and some limestone.
If there's even a little calcite in the stone or another mineral that's sensitive to acids, your granite may react negatively.
Note: Most granites do not contain calcite but it's best to test before buying! ;-)
Calcite is a mineral. It's sensitive to the acids in lemon juice, orange juice, soft drinks, tomatoes, wine and even some household cleaners. These products, as well as others, can leave all sorts of surface marks on your granite kitchen counter tops.
Because of this, The Oil and Lemon Juice Test will not only test for absorbency, it will also determine if the "Granite" you've selected is mixed with calcite or other minerals sensitive to acidic spills. Use this test on other natural stones too!
(Perform this test prior to your stone purchase.)