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Geology/Rock Identification

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Question
"the rock"
"the rock"  
I was wondering if you could help me ID this rock?   It's been "in my family" for almost 30 years in Iowa (midwest US) and we take it with us whenever we move.  The vein appears to be granite but unsure about the rest.  The black part of it is eroding faster than vein.

Thanks : )

Answer
Dear Camy
Rock is not granite color -index of rock -suggest rock may be Fe-Mg rich mineral rock-It may be doletrite /basalt
Vein is not granite -granite is rock vein is mineral
Vein may be quartz/calcite -put drop of acid on vein it reacts it may be calcite
Generally if vein is quartz it will resist for weathering -Fe-mg minerals of rock will weather
You can preserve rocks clean-periodically removes stains -from it
further you can consult local geologistProf DVREDDY-Editor in Chief IJEE-INDIA
u CAN SEE SEE OUR WEB=www.cafetinnova.org

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ISSN 0974-5904
International Journal of Earth Sciences and Engineering
Earth Science for Every one
INDEX

Indexed in Scopus Compendex and Geobase (products hosted on Engineering Village) Elsevier, Amsterdam, Netherlands, Chemical Abstract Services-USA, Geo-Ref Information Services-USA
Scopus Journal Rating (SJR) 0.038 & CSIR-NISCAIR, INDIA- Impact Factor 0.042
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VOLUME 05          DECEMBER-2012          NO.6

Editorial Note

From Spa to Corinth a Road for CO2 Sequestration
By R.D.SCHUILING, A.W.HOOGESTEGER and E. PRAAGMAN

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1. Luminescence Techniques as a Low-Cost Geophysical Tool in Mineral Exploration: Some Examples
By R.DHANA RAJU

2. Ensemble Empirical Mode Decomposition of the lightning return stroke
By XUQUAN CHEN and WENGUANG ZHAO

3. Peak Ground Acceleration on Bedrock and Uniform Seismic Hazard Spectra for Different Regions of Behbahan, Iran
BY SEYED ALI RAZAVIAN AMREI, GHOLAMREZA GHODRATI AMIRI, ARMAN SAED and ALI SABZEVARI

4. Coal Mine Seal Design Numerical Approach
By RAJ R. KALLU

5. A Numerical Simulation of Influence of Rock Class on Blast Performance
By M. SAZID, A. B. WASNIK, P. K. SINGH, A. KAINTHOLA and T.N. SINGH

6. A note on three way quality control of Argo temperature and salinity profiles - A semi-automated approach at INCOIS
By T.V.S. UDAYA BHASKAR, E. PATTABHI RAMA RAO, R. VENKAT SHESU and R. DEVENDER
7. Peak Ground Acceleration on Bedrock and Uniform Seismic Hazard Spectra for Different Regions of Zanjan, Iran
By GHOLAMREZA GHODRATI AMIRI, SEYED ALI RAZAVIAN AMREI, ALI SABZEVARI, ARMAN SAED and YASER SHOKRANI
8. Heavy Minerals and Provenance of the Lower Gondwana Sandstones, Ong-River Gondwana Basin, Odisha
By RABINDRA NATH HOTA and ARYA GOUTAMI NATH

9. Rating of Tunnel by Visual Field Inventory A Case Study of Punasa Tunnel, District Khandawa, M.P. India.
By GUPTA. M. C, SINGH. B. K and SINGH. K. N

10. Geology and characteristics of metalimestone-hosted iron deposit near Negash, Tigray, northern Ethiopia
BY SOLOMON GEBRESILASSIE, BHEEMALINGESWARA KONKA AND FISEHA ADHANOM

11. Ore Fluids Associated with the Metasediment Hosted Central Auriferous Zone of Gadag Gold Field, Karnataka
By M. A. MALAPUR, S. MANJUNATHA, B. CHANDAN KUMAR and A. G. UGARKAR

12. A Case Study of Particle Size Distribution of Paleosols around Sargur Supracrustal Terrain, Dharwar Craton, South India
By NARGES GOHARI RAD, PRAKASH NARASIMHA, K.N and MADESH, P

13. Effect of Ground Moisture on Spread of Contaminants in Sand Deposit-An Experimental Study
By E. SAIBABA REDDY, SINA BORZOOEI and G. V. NARASIMHA REDDY

14. Identification of Rain/No-Rain Events Using Quik SCAT Scatterometer Data
By PRITI SHARMA, RAJESH SIKHAKOLI, B.S. GOHIL and ABHIJIT SARKAR

15. Genesis of Thermal Springs of Odisha, India
By S.C. MAHALA, P. SINGH, M. DAS and S. ACHARYA

16. Remote Sensing Studies in Delineating Hydrogeological Parameters in the Drought-prone Kuchinda-Bamra Area in Sambalpur district, Odisha
By NANDITA MAHANTA and H.K.SAHOO

17. Impact Analyses of Industrial and Mining Activities on Groundwater Regime-Case Studies in Goa
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18. Identification of artificial recharge sites in a hard rock terrain Using Remote Sensing and GIS
By S. SARAVANAN

19. Drinking and Irrigation Water Quality in Jalandhar and Kapurthala Districts, Punjab, India: Using Hydrochemsitry
By P. PURUSHOTHAMAN, M.S. RAO, B. KUMAR, Y.S. RAWAT, GOPAL KRISHAN, S. GUPTA, S. MARWAH, A.K. BHATIA, Y.B. KAUSHIK, M.P. ANGURALA and G.P. SINGH

20. Groundwater Quality Assessment around Talabasta Area, Banki Sub-Division, Odisha, India
         BY ROSALIN DAS, MADHUMITA DAS and SHEERUP GOSWAMI

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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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