Geology Page

Hetaerolite

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<tr><td style="text-align: center;"><a href="http://1.bp.blogspot.com/-0Uwib3b8mqc/U1ZKH3ZyklI/AAAAAAAAHAw/2qFT7D7xFp4/s1600/0146533001072853925.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" src="http://1.bp.blogspot.com/-0Uwib3b8mqc/U1ZKH3ZyklI/AAAAAAAAHAw/2qFT7D7xFp4/s1600/0146533001072853925.jpg" height="320" width="320"></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;"><i>Mohawk Mine (Clark Station Mine; Pactolus Mine; Wilshire prospect),<br> Mohawk Hill, Pactolus, Clark Mountain District, Clark Mts<br> (Clark Mountain Range), San Bernardino Co., California, USA<br>© 2003 ROM</i></td></tr>
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<u><b>Formula:</b></u> ZnMn<sub>2</sub>O<sub>4</sub><br>
<u><b>System: </b></u>   Tetragonal    <br>
<u><b>Colour: </b></u>   Black<br>
<u><b>Hardness:</b></u> 6<br>
<u><b>Name:</b></u> Named in 1877 by Gideon Emmet Moore from the Greek έταίρος, "companion", in allusion to the original association with chalcophanite at the type locality.<br>
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Hetaerolite

Mohawk Mine (Clark Station Mine; Pactolus Mine; Wilshire prospect), Mohawk Hill, Pactolus, Clark...

Krypton used to accurately date ancient Antarctic ice

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<tr><td style="text-align: center;"><a href="http://1.bp.blogspot.com/-MeyALoVSW9Q/U1ZJbHMTavI/AAAAAAAAHAo/RaKzClW_aMI/s1600/140421151927-large.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" src="http://1.bp.blogspot.com/-MeyALoVSW9Q/U1ZJbHMTavI/AAAAAAAAHAo/RaKzClW_aMI/s1600/140421151927-large.jpg" height="240" width="320"></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;"><i>This is the ice core driller Tanner Kuhl with the blue ice drill on <br>Taylor Glacier in Antarctica. The field camp is visible in the background.<br>Credit: Photo courtesy of Xavier Fain</i></td></tr>
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A team of scientists has successfully identified the age of 120,000-year-old Antarctic ice using radiometric krypton dating -- a new technique that may allow them to locate and date ice that is more than a million years old.<br>
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Krypton used to accurately date ancient Antarctic ice

This is the ice core driller Tanner Kuhl with the blue ice drill on Taylor Glacier in Antarctica....

Today's Antarctic region once as hot as California, Florida

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<tr><td style="text-align: center;"><a href="http://1.bp.blogspot.com/-d8J72fFzh_I/U1ZID5j885I/AAAAAAAAHAc/GR7ys7dFLpc/s1600/140421164359-large.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" src="http://1.bp.blogspot.com/-d8J72fFzh_I/U1ZID5j885I/AAAAAAAAHAc/GR7ys7dFLpc/s1600/140421164359-large.jpg" height="212" width="320"></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;"><i>Antarctica today. Parts of ancient Antarctica were as warm as today's California coast, and polar regions of the southern Pacific Ocean registered 21st-century Florida heat, according to scientists using a new way to measure past temperatures.<br>Credit: © doethion / Fotolia</i></td></tr>
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Parts of ancient Antarctica were as warm as today's California coast, and polar regions of the southern Pacific Ocean registered 21st-century Florida heat, according to scientists using a new way to measure past temperatures.<br>
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Today's Antarctic region once as hot as California, Florida

Antarctica today. Parts of ancient Antarctica were as warm as today's California coast, and p...

Hessite

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<tr><td style="text-align: center;"><a href="http://2.bp.blogspot.com/-6S07qZnXB78/U1ZEltHuzlI/AAAAAAAAG_8/aL6Yoj8Gh-k/s1600/0855025001385940759.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" src="http://2.bp.blogspot.com/-6S07qZnXB78/U1ZEltHuzlI/AAAAAAAAG_8/aL6Yoj8Gh-k/s1600/0855025001385940759.jpg" height="320" width="213"></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;"><i>Botés, Alba Co., Romania<br>© Van King</i></td></tr>
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<u><b>Formula:</b></u> Ag<sub>2</sub>Te<br>
<u><b>System:</b></u>    Monoclinic    <br>
<u><b>Colour:</b></u>    lead-grey, steel-grey<br>
<u><b>Hardness: </b></u>2 - 3<br>
<u><b>Name:</b></u> Named in 1843 by Frobel in honor of Germain Henri Hess [August 7, 1802 Geneva, Switzerland - November 30, 1850 St. Petersburg, Russia], Swiss-Russian chemist who proposed Hess's Law, which stated that the final thermodynamic energy of a series of chemical reactions is independent of the chemical pathway to that state. Earlier called tellursilber by Rose and later confounded with petzite and other species. Hess was a student of Jons Jakob Berzelius.<br>
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Hessite

Botés, Alba Co., Romania © Van King Formula: Ag 2 Te System: Monoclinic Colour: l...

Taking the pulse of mountain formation in the Andes

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<tr><td style="text-align: center;"><a href="http://1.bp.blogspot.com/-iA2BDcOXQxQ/U1ZBdljYCyI/AAAAAAAAG_w/uK7SUnpc4nU/s1600/takingthepul.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" src="http://1.bp.blogspot.com/-iA2BDcOXQxQ/U1ZBdljYCyI/AAAAAAAAG_w/uK7SUnpc4nU/s1600/takingthepul.jpg" height="239" width="320"></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;"><i>Sedimentary deposits near Cerdas in the Altiplano plateau of Bolivia are shown. These rocks contain ancient soils used to decipher the surface temperature and surface uplift history of the southern Altiplano. <br>Credit: Photo by Carmala Garzione/University of Rochester. </i></td></tr>
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Scientists have long been trying to understand how the Andes and other broad, high-elevation mountain ranges were formed. New research by Carmala Garzione, a professor of earth and environmental sciences at the University of Rochester, and colleagues sheds light on the mystery.<br>
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Taking the pulse of mountain formation in the Andes

Sedimentary deposits near Cerdas in the Altiplano plateau of Bolivia are shown. These rocks conta...

Atmospheric boundary layer exacerbated mega heat waves

The extreme nature of the heat waves of 2003 in Western Europe and of 2010 in Russia and Eastern ...

Herderite

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<tr><td class="tr-caption" style="text-align: center;"><i>Davib East Farm 61 (Davib Ost Farm), Karibib District, Erongo Region, Namibia<br>© 2005 M. Kampf</i></td></tr>
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<u><b>Formula: </b></u>CaBePO<sub>4</sub>(F,OH)<br>
<u><b>System: </b></u>   Monoclinic    <br>
<u><b>Colour: </b></u>   Colourless, pale yellow, ...<br>
<u><b>Lustre: </b></u>   Vitreous, Sub-Vitreous    <br>
<u><b>Hardness:</b></u> 5 - 5½<br>
<u><b>Name: </b></u>Named by Wilhelm Haidinger in 1828 in honor of Siegmund August Wolfgang von Herder (August 18, 1776 Gerrmany - January 29, 1838 Dresden, Germany), Mining official in Freiberg, Germany<br>
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Herderite

Impact glass from asteroids and comets stores biodata for millions of years

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<tr><td style="text-align: center;"><a href="http://1.bp.blogspot.com/-AFw9lYOOnUo/U1OYOyYq5nI/AAAAAAAAG-w/Z-8GJ8RgO5U/s1600/140418141115-large.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" src="http://1.bp.blogspot.com/-AFw9lYOOnUo/U1OYOyYq5nI/AAAAAAAAG-w/Z-8GJ8RgO5U/s1600/140418141115-large.jpg" height="268" width="320"></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;"><i>The scorching heat produced by asteroid or comet impacts can melt tons of soil and rock, some of which forms glass as it cools. Some of that glass preserves bits of ancient plant material.<br>Credit: A snapshot of ancient environmental conditions</i></td></tr>
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Bits of plant life encapsulated in molten glass by asteroid and comet impacts millions of years ago give geologists information about climate and life forms on the ancient Earth. Scientists exploring large fields of impact glass in Argentina suggest that what happened on Earth might well have happened on Mars millions of years ago. Martian impact glass could hold traces of organic compounds.<br>
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Impact glass from asteroids and comets stores biodata for millions of years

The scorching heat produced by asteroid or comet impacts can melt tons of soil and rock, some of ...

Scientists find Earth-sized world in orbit friendly to life

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<tr><td style="text-align: center;"><a href="http://3.bp.blogspot.com/-GOgk5OF_Nvo/U1OXaU3-MGI/AAAAAAAAG-o/b1fCI-vMwYo/s1600/earth-life.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" src="http://3.bp.blogspot.com/-GOgk5OF_Nvo/U1OXaU3-MGI/AAAAAAAAG-o/b1fCI-vMwYo/s1600/earth-life.jpg" height="223" width="400"></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;"><i>Kepler-186f, the first validated Earth-size planet to orbit a distant star in the habitable zone?a range of distance from a star where liquid water might pool on the planet's surface, is seen in a NASA artist's concept released April 17, 2014.<br><br>Credit: Reuters/NASA/JPL-Caltech/Handout</i></td></tr>
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(Reuters) - For the first time, scientists have found an Earth-sized world orbiting in a life-friendly zone around a distant star.<br>
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The discovery, announced on Thursday, is the closest scientists have come so far to finding a true Earth twin. The star, known as Kepler-186 and located about 500 light years away in the constellation Cygnus, is smaller and redder than the sun.<br>
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Scientists find Earth-sized world in orbit friendly to life

Kepler-186f, the first validated Earth-size planet to orbit a distant star in the habitable zone?...

Hetaerolite

Krypton used to accurately date ancient Antarctic ice

Today's Antarctic region once as hot as California, Florida

Hessite

Taking the pulse of mountain formation in the Andes

Atmospheric boundary layer exacerbated mega heat waves

Herderite

Impact glass from asteroids and comets stores biodata for millions of years

Scientists find Earth-sized world in orbit friendly to life

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