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Question
shiny rock
shiny rock  

shiny rocks
shiny rocks  
my boyfriend found these rocks near a railroad track on 6-2-14 near garfield rd in midland mi do u know what they may be are they worth anything

Answer
Dear Rhoda, Good morning and Fraternal Greetings!

I have seen the rock sample you have sent. It is difficult for me to know exactly what type of rock it is unless I could see with my naked eyes. More over some of the physical properties like Hardness, specific gravity and streak are most important to decide the worth of the rock.

However, it may be either Galena (Pbs)mineral or simply Amphibolite schist rock ???

with regards

Geology

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Dr D S Subrahmanyam

Expertise

All questions related to Geology, Geotechnical Engineering (especially in-situ stress, in-situ Deformability and Shear investigations) required for underground tunnels and excavations, Dimensional Stone Mining. Can't answer Soil dynamics related to Geotechnical Engineering

Experience

Geology and Geotechnical Engineering and Dimensional Stone Mining

Organizations
National Institute of Rock Mechanics (Govt of India)

Publications
International Journal of Mining Engineering and some other Indian journals

Education/Credentials
Doctorate in Geology

Awards and Honors
Reviewer for 3 International Journals

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