Tom DaCosta of Burrillville has a rock collection that includes cumberlandite, which can be found on South County’s east coast.

The Providence Journal / RUBEN W. PEREZ

1. South County’s east coast on Narragansett Bay includes cumberlandite, a rock estimated by geologists to be about 1 1/2 billion years old. This rock has another name:

a) Coastline rock

b) South County rock

c) Narragansett Bay rock

d) Rhode Island state rock

2. In 1873, a Fall River company ran a “fish-pressing” establishment in Narragansett Bay whose noxious odors forced the citizens in this community to drive it out of business. The community was:

a) Narragansett

b) Wickford

c) Hamilton

d) Saunderstown

3. Flax grown in South County in Colonial days not only provided fiber for linen, but also seeds for:

a) Poultry feed

b) Edible grain

c) Deep purple flowers

d) Linseed oil

ANSWERS:

1 — d. Cumberlandite was originally called rhodose, but was renamed in 1966 when the General Assembly designated it the state rock. Its origin is in Cumberland, but thanks to glacial movements, scattered pieces can be found on both sides of the Bay and even on Block Island.

2 — b

3 — d