Tamil Nadu's two villages helped ISRO to make historic landing on moon

Here is how these two villages in Namakkal, Tamil Nadu helped Chandrayaan 2, which is set to make a historical landing in Moon's south polar region. 
Anorthosite as it is the oldest rock found in moon and I know it is found in Sitthampoondi-Kunnamalai village in Namakkal district so you brought it to a special lab in Bengaluru for mock tests.