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" ... Gabbro is a rock with feldspar, but here free quartz is almost completely replaced by dark minerals, like crystals of pyroxene, displaying here also a typical glassy luster along the cleavage. ... "
" ... Rich in iron, calcium, and magnesium bound up in minerals such as olivine and pyroxene, NASA says that one hypothesis for the smell is simply that the Moon is like one large 4 billion-year-old desert. And once its dust comes into contact with a moist atmosphere like the one designed to support life inside the lunar module, the dust’s molecules became noticeable to the astronaut’s own olfactory systems. But its odd, gunpowder-like smell remains a mystery. ... "
" ... The large pyroxene crystals and chemical composition suggest that EC 002 is an igneous rock, a type of rock that forms when magma (molten rock) cools and crystallizes. With an age of about 4.6 billion years, just 2 million younger than the solar system, it is the oldest known example of magma from space. ... "