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Geology/What type of rock do I have?

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Question
My Rock
My Rock  

My Rock
My Rock  
I live in Central Massachusetts and I found a rock in a pothole in my street ten years ago.  My street is a dirt road and a dump truck came one day and dumped rocks in the potholes.  This rock I have was among them.  The rest of the rocks were all rough, sharp and pointy in shape.  But this one is completely smooth, and sort of egg-shaped.  The pictures might not show it, but the rock is an ashy brownish gray color, with minuscule flecks of white.  It has only a few small dents and weighs two pounds.  I was wondering what type of rock it is, if there might be something inside, and how I would open it if there's something inside.

Answer
Dear Samantha
This rock due to weathering conditions became rounded-They collected rocks from the field-It is not source originally where rock was existed
You can try to test rock your self-first wash rock with water removed -covered dust
Rock identification done by phyical verification with mineral content
I am unable to identify minerals in rocks in picture
u can try your self note hardness of minerals -cutting with knife-or glass whether it can be scratched or not
if it hard rock like granite consist of quartz and feldspar are harder
Local geologist can -assist you -if u know
Prof Dr D.Venkat Reddy
Professor of Geology
Editor- in -Chief -International  Journal of  Earth Sciences&Engineering -IJEE

Published by=(Cafet Innova Technical Society -CITS- Hyderabad-AP-India)
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Department of Civil Engineering
National Institute of Technology,Karnataka,(NITK)
Surathkal,Srinivasanagar-575025,Mangalore-D.K,India
http://cafetinnova.org/ijee.html

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Dr D.Venkat Reddy

Expertise

Engineering Geology,Mining geology,commercial petrology,Decorative and dimensional stones,Hydrogeology

Experience

20years texhing and reserch expireience in geology,enginnering geology for graduate and undergraduate students-reserch guidance,10years field exoireience conducting field camps for geology students=Presently Assistant professor in geolog

Organizations
NITK-National Institute of Technology,Surathkal,Mangalore-DK,India Geology section Dept of Civil Engineering

Publications
published 70 research papers.( 4 books)- Editor in Chief-International Journal of Earth Sciences and Engineering -1.Engineering Geology for civil Engineers-oxford &IBH pub-1996] 2.Decorative and dimensional stones of India-CBS Pub-1997 3.Engineering Geology-Vikaspublishers2010 4.Applied Geology-Vikaspub-2010

Education/Credentials
MSC(GEOLOGY),Osmania university,India, MSC(Tech )Hydrogeology,OU,India PhD(GEOLOGY)OU,India

Awards and Honors
Distinguishing Indian Award Editor in chief-International Journal of Earth Sciences and Engineering (www.cafetinnova.org)

Past/Present Clients
PRESENTLY WORKING =Professor of Geology-Dept of Civil Engineering NITK-INDIA

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