'Give me a Z!  One crystal of this 6-letter mineral was found in sandstone formed in Australia about 4.4 bil. years ago'
zircon
ROCK OF AGES: Give me a Z!  One crystal of this 6-letter mineral was found in sandstone formed in Australia about 4.4 bil. years ago
Give me a Z!  One crystal of this 6-letter mineral was found in sandstone formed in Australia about 4.4 bil. years ago
Give me a Z!  One crystal of this 6-letter mineral was found in sandstone formed in Australia about 4.4 bil. years ago
ROCK OF AGES
zircon
ROCK OF AGES