Mineralogy 2025

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Across
  1. 3. CaCO3
  2. 5. FeS
  3. 7. cations + O
  4. 8. SiO2
  5. 10. light bending as it passes from one medium to another
  6. 13. Fe3O4
  7. 15. Al2O3
  8. 16. (Mg,Fe)2SiO4
  9. 18. FeO(OH)
  10. 20. Fe2O3
  11. 22. C
  12. 28. silicates with silica tetrahedra linked in sheets
  13. 31. Al(OH)3
  14. 33. silicates with silica tetrahedra linked in rings
  15. 34. CaAl2Si2O8
  16. 35. Mg3Si2O5(OH)4
  17. 36. (Ca,Na)(Mg,Fe)(Si,Al)2O6
  18. 37. CaMg(CO3)2
  19. 39. CuFeS2
  20. 41. Ca2FeAl3(SiO4)(Si2O7)O(OH)
  21. 44. false form of mineral that replace earlier mineral, but retained shape
  22. 46. (Ca,Mg,Fe,Mn)3(Al,Fe)2(SiO4)3
  23. 48. silicates with isolated silica tetrahedra
  24. 50. cations + SO4
  25. 51. ZnS
  26. 52. difference in refractive index in anisotropic minerals
  27. 53. Mg5Al2Si3O10(OH)8
Down
  1. 1. Al2SiO5
  2. 2. minerals with same chemical composition, but different crystal structures
  3. 4. NaAlSi3O8
  4. 6. cations + (OH)
  5. 9. simples building block of a crystal that defines both the composition and relative positions of ions
  6. 11. FeS2
  7. 12. (Ca,Na)2(Mg,Fe,Al)5(Al,Si)8O22(OH)2
  8. 14. PbS
  9. 17. 3-D arrangement of atoms in a crystal
  10. 19. when anisotropic minerals appear black in cross-polarized light due to alignment with polarizing filters
  11. 21. KAl3Si3O10(OH)2
  12. 23. cation plus F, Cl, Br (group 7)
  13. 24. K(Mg,Fe)3AlSi3O10(OH)2
  14. 25. Al2Si2O5(OH)4
  15. 26. difference in color along different directions
  16. 27. silicates with silica tetrahedra in 3-D frameworks
  17. 29. Mg3Si4O10(OH)2
  18. 30. NaCl
  19. 32. CaSO4-2H2O
  20. 38. silicates with silica tetrahedra linked in chains
  21. 40. cations + PO4
  22. 42. cations +
  23. 43. silicates with paired silica tetrahedra
  24. 45. CaF2
  25. 47. Ca5(PO4)3(OH)
  26. 49. cations + CO3