| MOHS | Friedrich ___, German mineralogist who gave his name to a hardness scale |
| FROBEL | Friedrich ___, German educator who opened the Kindergarten institute in 1840 (6) |
| SCHILLER | Friedrich ___, German poet who authored stage plays The Robbers and Maria Stuart (8) |
| HEGEL | Georg Wilhelm Friedrich ___, German idealist philosopher who died in 1831 (5) |
| ENGELS | Friedrich ___, German political philosopher who collaborated with Marx on The Communist Manifesto (6) |
| NIETZSCHE | Friedrich ___, German philosopher whose works include Thus Spoke Zarathustra: A Book for All and None |
| FROEBEL | Friedrich ___, German educator who founded the first kindergarten in Blankenburg, Thuringen, in 1837 (7) |
| GAUSS | Carl Friedrich _; German mathematician, astronomer and physicist (5) |
| TALC | Mineral with a hardness of one on the Mohs scale |
| WOHLER | Friedrich ___ (1800-82), German chemist who was the first to isolate aluminium and to synthesise urea, in 1827-8 (6) |
| ITE | Follower of many a mineralogist's name |
| SMITHSON | James --, 1765-1829, English chemist and mineralogist (8) |
| ONYX | Part of a mineralogist's collection |
| GNEISSSHOT | Mineralogist's words of praise on the golf course? |
| AMIGLADTOSEEURANIUM | Mineralogist's cry after finally locating some element No. 92? |
| ANKER | Noted Austrian mineralogist |
| EBERT | Friedrich ___, Social Democratic statesman who served as the first president of Germany (1919-25) (5) |
| TEN | Upper limit of mineralogists' Mohs scale |
| GEOL | Mineralogist's field, for short |
| ROCK | Mineralogist's focus |
