8 dark grey felsite Madison projectile point ( Figure 30c ) 3 ( 207 / 2210 ) | S3E10 8 . 7 6 . 2 white ... 4 yellow granite hammerstone 5 ( 207 / 2300 ) | S4E10 white quartz 6 . 2 5 . 2 3 . ... Locus B Fire Cracked Rock ( Total Sample ) FCR Granite Slate Diorite Quartz Merrimack Quartzite Other Quartizite Total Number 210 . 0 21 .