| # | Clue | Answer As Given | Value | Round | Category | Air Date | Show |
|---|---|---|---|---|---|---|---|
| This gas is the most abundant element in almost all the world's rocks | oxygen DD | $800 | J | ROCKS & MINERALS | 1994-04-22 | #2230 | |
| The most common element of the 8 that make up 98% of all the rocks in the world | oxygen | $1,000 | DJ | ROCKS & MINERALS | 1985-06-05 | #193 |