Answer:

trona

Answer	Crossword Clue
TRONA	Sodium-rich mineral
TRONA	Lake-basin mineral
TRONA	Mineral akin to natron.

TRONA	Whitish mineral.
TRONA	Mineral found in lake beds
TRONA	Salty deposit in lake basins
TRONA	Soda-brine material
TRONA	Lake-bed deposit
TRONA	Gray mineral
TRONA	Gray-white mineral
TRONA	Mineral from lake beds

TRONA	A sodium carbonate
TRONA	Sodium carbonate
TRONA	Mineral containing sodium carbonate
TRONA	Type of sodium carbonate
TRONA	Vitreous mineral
TRONA	Grayish-white mineral
TRONA	Mineral found in dried lake basins
TRONA	Mineral from dried lake basins