| OLIVINE | A greenish mineral occurring widely in basalt and other igneous rocks (7) |
| WOLFRAMITE | Chief ore of tungsten, typically occurring in granite and other igneous rock (10) |
| MAFIC | A mnemonic term that blends "magnesium" and "ferric" to describe dark-coloured minerals present in basalt, gabbro olivine, peridotite, pyroxene or other igneous rock (5) |
| BLINDASABAT | Seeing nothing at all bad in basalt rocks |
| LARGESCALE | Great, remove tartar from teeth that's occurring widely (5-5) |
| MASS | Occurring widely (as to many people). |
| EPIDOTE | A greenish mineral, a silicate of calcium, aluminium and iron (7) |
| APATITE | A pale green to purple mineral, found in igneous rocks and metamorphosed limestones (7) |
| ZOISITE | A grayish or whitish mineral occurring in orthorhombic, prismatic crystals. (7) |
| CALCIUM | Named by its discoverer Sir Humphry Davy after the Latin for "lime", an element/mineral occurring in bones, chalk, coral reefs, Cotswold stone, marble, pearls and seashells (7) |
| DIAMOND | An exceptionally hard mineral found in certain igneous rocks, especially the kimberlites of South Africa |
| SWAHILI | Language spoken widely in arts of east Africa (7) |
| SPANISH | *Language spoken widely in Madrid which has its origins in 18a |
| ITALIAN | *Language spoken widely in Milan which has its origins in 18a |
| IGNEOUS | Like basalt and obsidian |
| BASALTS | Igneous rocks |
| ZIRCON | Hard mineral occurring principally in igneous rocks (6) |
| NATIVE | Of a metal or other mineral, occurring naturally in a pure or uncombined state (6) |
| BORAX | A white mineral occurring in alkaline soils and salt deposits (5) |
| MICA | From Latin for "crumb", a lustrous silicate mineral occurring in glittering scales or in crystals (4) |
