Somewhat like ours, but richer in aluminum and titanium, plus some compounds never before seen on earth.

Mission...............Total mass
Apollo 11                  21.7 kilograms
Apollo 12                  34.4
Apollo 14                  42.9
Apollo 15                  76.8
Apollo 16                  94.7
Apollo 17                110.5......................................

The total mass was 381.69 kilograms or 841.6 pounds. It was delivered in 2196 original samples at a cost for the Apollo program of 24 billion dollars or 28,500 dollars per pound. By 1975 this had been split into 35,600 samples. 5 kilograms were consigned to sample displays in museums around the world for public viewing and even touching! A total of 5.1 percent or 19.3 kilograms have been allocated for scientific study, the rest is archived untouched for posterity. About 1.64 kilograms ( 3.6 pounds) were destroyed in laboratory testing.

The particular compounds that were found were:

Plagioclase Feldspar
Olivine
Pyroxene
Silica-
Quartz
Ilmenite
Potassium 
Feldspar
Chromite
Ulvospinel
Hercynite
Armalcolite
Troilite
Apatite
Whitlockite
Tranquillityite
Pyroxferroite
Chalcopyrite

The minerals, Armalcolite, Tranquillityite and Pyroxferroite are unique to the moon.