The very close-grained and uniformly crystalline variety known as anamesite is much more frequent, and of a massive structure, dark internally, and weathering on its exterior into a reddish-brown colour. Crystals of olivine are plentifully disseminated throughout, and the rock often occurs towards the middle of the hills, interstratified with ashy and vesicular traps, sometimes forming the terraces of the lower flat-topped summits.
