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Mineral Specimens. Magnatite Strongly Magnetic Form of Iron Ore.

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Presentation on theme: "Mineral Specimens. Magnatite Strongly Magnetic Form of Iron Ore."— Presentation transcript:

1 Mineral Specimens

2 Magnatite Strongly Magnetic Form of Iron Ore

3  Hardness 1- 2

4 Pyrite Brass Yellow Cubic “Fool’s Gold” Form of Iron Ore

5 Chalcopyrite Yellow Brass Purple “Peacock Ore” Form of Iron Ore

6 Galena Gray S.G. = 7.5 Cubic Form of LEAD Ore

7 Limonite Yellow-brown to rust Hardness = 5.5 Form of Iron Ore

8 hematite Red to Brown Streak Form of Iron Ore Shiny when polished

9 Orthoclase Cleavage Planes at 90 

10 ORTHOCLASE (cont)

11 Quartz HEXAGONAL 6 Crystals Shell-like Fracture

12 Citrine Amethyst Rose Smoky

13 Olivine Shades of Green Peridot birthstone

14 Halite Colorless to White Salty Taste

15 Calcite Hardness = 3 “Scale” in water Triclinic

16 Calcite may DOUBLE REFRACT

17 Gypsum Hardness = 2

18 Talc Hardness = 1 Greasy luster

19 Muscovite Cleavage in flat sheets

20 Fluorite 8 sided cleavage

21 Fluorite samples

22 Augite 2 Cleavage planes @ 90  Black

23 Corundum HEXAGONAL 6 crystals Hardness = 9 Red = RUBY Other = Sapphire

24 Garnet Reddish Brown Brittle

25 Shell-like Fracture Petrified Wood

26 Black Cleavage in flat sheets

27 Shell-like Fracture

28 minerals NATURAL LIGHT UV Light

29


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