| coal | 0.51 |
| association | 0.42 |
| fine crystals | 0.38 |
| dust | 0.38 |
| attract prosperity | 0.50 |
| occur in numerous shapes | 0.45 |
| emit spark | 0.43 |
| react with water | 0.43 |
| occur as dissemination | 0.38 |
| form in cube | 0.38 |
| react with air | 0.38 |
| produce sulfuric acid | 0.38 |
| protect against harm | 0.37 |
| promote good physical h… | 0.37 |
| More » |
| small amounts of gold | 0.45 |
| metallic luster | 0.43 |
| minor nickel | 0.39 |
| metallic | 0.25 |
| common | 0.67 |
| helpful | 0.58 |
| lighter | 0.46 |
| abundant | 0.46 |
| harder | 0.45 |
| brittle | 0.43 |
| cubic | 0.39 |
| auriferous | 0.38 |
| unoxidized | 0.29 |
| harder than gold | 0.29 |
| More » |
| an iron sulfide | 0.55 |
| mineral | 0.52 |
| brass-yellow mineral | 0.43 |
| a sulphide mineral | 0.40 |
| composed of iron | 0.71 |
| mined | 0.68 |
| used as an ore of gold | 0.59 |
| mistaken for gold | 0.56 |
| composed of sulfur | 0.46 |
| derived in fire | 0.45 |
| exposed to the air | 0.43 |
| exposed to water | 0.43 |
| found associated with o… | 0.42 |
| maintained at concentra… | 0.42 |
| More » |