Random triples
| Subject | Object |
|---|---|
| gptkb:joaquinite | brittle |
| gptkb:Scolecite | Brittle |
| gptkb:rhodochrosite | brittle |
| gptkb:arsenopyrite | brittle |
| gptkb:dumortierite | brittle |
| gptkb:Jadeite | Brittle |
| gptkb:brucite | sectile |
| gptkb:Thomsonite | Brittle |
| gptkb:mineral_zircon | brittle |
| gptkb:analcime | brittle |
| gptkb:Red_beryl | brittle |
| gptkb:Wavellite | Brittle |
| gptkb:petzite | brittle |
| gptkb:Wulfenite | Brittle |
| gptkb:Albite | Brittle |
| gptkb:Alexandrite | brittle |
| gptkb:talc | sectile |
| gptkb:Trona_(mineral) | Brittle |
| gptkb:Ca2(Mg,Fe)5Si8O22(OH)2_(nephrite) | tough |
| gptkb:Smoky_Quartz | Brittle |