Geology 300: Physical Geology

Geology 301: Physical Geology Lab

Geology 305: Earth Science

Geology 306: Earth Science lab

Samples: Minerals,  Sedimentary,  Igneous,  Metamorphic

Instructor: Arthur Reed, P.G.

 

 

 

 

These 3D images are not part of this activity, they are just for fun

Biotite 5-31-2020 by rocksandminerals on Sketchfab

Staurolite twin by Earth Sciences, University of Newcastle on Sketchfab

 

 

 

 

 

 

Mineral Samples for Geol 301 Lab Activity 3.4

All samples are approximately 1” – 3” in size

SG = Specific Gravity

 

 

 

SAMPLE 553

Hardness: 3

SG = 2.7

 

 

 

SAMPLE 554

Hardness: 3.4 - 4

SG = 4.1 – 4.3

 

 

SAMPLE 556

May fizz with HCl when in powdered form

Hardness: 3.5 - 4

SG = 2.8 – 2.9

 

 

SAMPLE 557

Exceptionally high density

Hardness: 2.5

SG = 7.4 – 7.6

 

 

SAMPLE 558

Hardness: 2

SG = 2.3

 

 

 

SAMPLE 562

Hardness: 7

SG = 2.7 – 2.7

 

 

 

 

SAMPLE 564

Hardness: 1

SG = 2.7 – 2.8

 

 

SAMPLE 565

Often is cubic form

Taste Test: tastes salty

Hardness: 2.5

SG = 2.1 – 2.6

 

 

SAMPLE 567

Hardness: 1 - 6

SG = 4.9 – 5.3

 

 

 

SAMPLE 568

Hardness: 4 - 7

SG = 3.6 – 3.7

 

 

 

SAMPLE 569

Hardness: 7 – 7.5

SG = 7 – 7.5

 

 

 

SAMPLE 571

Hardness: 2 – 2.5

SG = 2 - 3

 

 

SAMPLE 573

Density is less than average for crustal material

Hardness: 7

SG = 2.6 – 2.7

 

 

 

 

SAMPLE 574

Hardness: 2.5 - 3

SG = 2.7 – 3.1

 

 

SAMPLE 576

Hardness: 5.5 - 6

SG = 3 – 3.3

 

 

 

SAMPLE 580

Hardness: 9

SG = 3.9 – 4.1

 

 

SAMPLE 588

Hardness: 6

SG = 2.6 – 2.8

 

 

 

SAMPLE 589

‘Peach color’ is significant

Hardness: 6

SG = 2.5 – 2.6

 

 

SAMPLE 607

Hardness: 6 – 6.5

SG = 5 – 5.2

 

 

 

SAMPLE 608

Often in cubic form

Density higher than average for crustal material

Hardness: 6 – 6.5

SG = 4.9 – 5.2

 

 

 

SAMPLE 609

Hardness: 1

SG = 2 – 2.3

 

 

 

SAMPLE 612

Crystal shape (in the smaller samples) is very distinctive

Density is about average for crustal material

Hardness: 4

SG = 3 – 3.3

 

 

SAMPLE 613

‘stinky’, often found around volcanic vents

Hardness: 1.5 – 2.5

SG = 2.1

 

 

 

SAMPLE 617

Often greenish color

Hardness: 7

SG = 3.3 – 3.4

 

 

 

SAMPLE 624

Rhombic dodecahedron

Hardness: 7

SG = 3.5 – 4.3

 

 

SAMPLE 634

Hardness: 2.5 - 3

SG = 3.9 – 4.1

 

 

 

SAMPLE 635

Hardness: 5

SG = 3.1 – 3.4

 

 

SAMPLE 636

Hardness: 5 – 5.5

SG = 3.3 – 4.3

 

 

SAMPLE 637

Hardness: 5.5 - 6

SG = 4.5 – 4.8

 

 

SAMPLE 638

Hardness: 5.5 - 6

SG = 3.1

 

 

SAMPLE 640

Hardness: 6 - 7

SG = 3.3 – 3.5

 

 

SAMPLE 641

Hardness:  3.5 - 4

SG = 3.6 - 4

 

 

 

 

 

 

 

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