Mineralquiz Crossword
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
 
 
Down: 1) - From magma/ lava by cooling - Heat and pressure deepwithin the earth - in geodes -by evaporation2) ...... is the color of a mineral in powdered form.9) ... is the way a surface reflects light. The two types of ... are metallic (glassy, shiny) or non-metallic (dull, earthern, waxy, greasy) Across: 1) ...... compares the density of a substance to the density of water3) ..... is the ability to resist being scratched4) 1. Inorganic 2. naturally formed 3. Solid 4. Definite chemical composition 5. Crystal structure5) Obsidian does not have a crystal structure. It is not a solid but a firm set liquid.6) It has not failed because I can eliminate all minerals that leave a colored streak. Diamonds will not leave a streak.7) ..... of a mineral can be found by using the MOHS Hardness Scale. Talc = 1 Diamond = 108) 1. Silicates [Si, O] Non-Silicates [no Si] 2. Carbonates [C, O] 3. Sulphates [S, O] 4. Sulphides [S] 5. Oxides [O, but no Si, S, or C] 6. Halides [Cl, F, Br, or I] 7 Native elements only one kind of atom [Ag, Au, Cu, C]10) Color can be affected by impurities or chemical or physical reaktions that affect the surface of a mineral. Pyrite turns black , Copper turns green11) If the crystallisation rate is slow than big, well developed crystals can form. At a high crystallisation rate the crystalls will be smaller.12) Specific gravity is a ratio. it compares the density of a sample to the density of water. it has no unit. Density is a physical property that has the unit g per cubic cm.[D=M/V]13) The value of the density of a sample and the value of its specific gravity are the same. Specific gravity=density[g/ccm] / 1[g/ccm}14) ..... is determined by the repeating pattern of atoms
 

 

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