Streak (#42-51) main content.

Streak, the color of powder made from a mineral, often differs from the color of the specimen itself. It is a useful diagnostic tool in mineral identification.

42. Sulfur (Yellow)
43. Malachite (Green)
44. Pyrite (Black)
45. Goethite (Brown)
46. Fluorite (White)
47. Rhodochrosite (White)
48. Hematite (Red)
49. Zincite (Orange)
50. Azurite (Blue)
51. Cinnabar (Red)