diamonds host rocks the gemhunter

Prospecting for Diamond Deposits

Oct 28 2017Because very high grade diamond ores have been detected in some of these unconventional commercial host rocks are anticipated to be found in the future (Erlich and Hausel 2002) Presently diamond exploration programs are designed to search for conventional host rocks (i e kimberlite and lamproite) or for placers presumably derived from these

Diamonds—Evidence of Explosive Geological Processes

The two host rock types in which significant quantities of diamond occur are called kimberlite (named after the best-known and earliest-mined diamond deposits at Kimberley in South Africa) and lamproite Secondary diamond deposits are formed from these primary host rocks due to weathering and transportation by surface erosion processes

Wyoming Diamonds

The host rock was named kimberlite after the nearby town It was here that Cecil Rhodes began his De Beers Consolidated Mines venture in 1888 Most miners believed that diamond deposits ended at the base of the "yellow ground " Rhodes believed that the harder blue-tinted rock beneath could hold diamonds

Diamond

The second geological source for diamonds is placer deposits The diamonds are easily weathered out of their kimberlite host rock and are washed away by streams and rivers When these streams slow down the diamonds are deposited in the stream sands in what are called placer deposits (IMAR 7

Wyoming Diamonds

The host rock was named kimberlite after the nearby town It was here that Cecil Rhodes began his De Beers Consolidated Mines venture in 1888 Most miners believed that diamond deposits ended at the base of the "yellow ground " Rhodes believed that the harder blue-tinted rock beneath could hold diamonds

Herkimer Diamonds For Sale

Herkimer Diamonds Herkimer Diamonds aren't actual diamonds but they're still highly valued by collectors! Named after Herkimer County New York where they were first discovered in the 1700s Herkimer Diamonds are natural double-terminated crystals of Quartz (SiO 2) Herkimer Diamonds formed inside Cambrian dolomite host rock which you can see pictured at the bottom of this page

Secrets About Mining Herkimer Diamond Quartz Crystals

Herkimer Diamond Geology and Geography The host rock of Herkimer diamonds is the Cambrian-age Little Falls Dolostone The Little Falls Dolostone was deposited about 500 million years ago and the Herkimer diamonds formed in cavities within the dolostone These cavities are frequently lined with drusy quartz crystals and are often coated with a tarry hydrocarbon

GOLD PROSPECTS

Nov 13 2011The Gemhunter a polymath of rocks martial arts stars pencil written word public speaking A Hall of Fame Martial Artist Geologist Author and Public Speaker Look for numerous blogs by the GemHunter on gemstones gold and martial arts designed to help the reader learn about these subjects View my complete profile

Prospecting for Diamond Deposits

Dec 07 2017Diamonds are rare gemstones commercially mined in kimberlite lamproite and placer deposits Most originate from the earth's mantle but the rare gemstone can be found in nature using sound prospecting methods The author (the GemHunter) found many kimberlites and diamonds over the years as well as a variety of other gemstones He shares his exploration techniques with his readers

Prospecting Rock Hounding

Thus for their size diamonds can be an extremely valuable commodity Diamonds are mined from two rare rock types – kimberlite and lamproite both of which are abundant in Wyoming (figure 8) For instance Wyoming hosts the two largest known fields of kimberlite in the US and the largest lamproite field in North America

The Secrets Of Herkimer Diamonds

Dolostone is the host rock for the Herkimer Diamond It is a very rigid rock and it protects the Herkimer Diamonds from any mechanical force or movements while they are formed A lot of these gemstones can be found within pockets that may also have druzy crystals within them It can also be very interesting to note that Herkimer Diamonds rank

GemHunter's Guide to Gold and Diamonds in Montana

Aug 12 2013Several diamonds have been found in Montana and several potential host rocks occur in the State (Hausel 1998) Alnites monticellite peridotites carbonate-rich mica peridotites monchiquites lamproites and kimberlites are all reported in Montana (these are all rare volcanic rocks that could have diamonds - Erlich and Hausel 2000 )

How to Identify an Uncut Rough Diamond

Diamonds don't like water so miners sometimes use grease to separate diamonds from other rocks and minerals They pour a slurry of material to be sorted across a greased table The diamonds stick in the grease while the rest of the material is carried across the table Also about 30 percent of diamonds fluoresce under shortwave ultraviolet

Diamond embedded in the Kimberlite host rock that brought

Diamond embedded in the Kimberlite host rock that brought it to the surface of the earth / Siberia Russia Uncut Diamond Rough Diamond Diamond Stone Black Diamond Diamond Cuts Cool Rocks Beautiful Rocks Rock Collection Rocks And Gems

Prospecting for Diamond Deposits

Dec 07 2017Diamonds are rare gemstones commercially mined in kimberlite lamproite and placer deposits Most originate from the earth's mantle but the rare gemstone can be found in nature using sound prospecting methods The author (the GemHunter) found many kimberlites and diamonds over the years as well as a variety of other gemstones He shares his exploration techniques with his readers

The Quartz Page: Diamonds

Sep 11 2014The specimen in the third picture from Bsingfeld is a clear double terminated smoky quartz of a nice cinnamon-like color surrounded by colorless quartz and calcite crystals Two things are remarkable about Schaumburg diamonds: 1 It is rather uncommon to find smoky quartz in sedimentary rocks as they usually lack radioactive elements that are the source of high energy radiation

3 Easy Ways to Identify Raw Diamonds

May 29 2020How to Identify Raw Diamonds Diamonds which have not yet been cut are referred to as 'rough' or 'raw' diamonds To identify whether the stone you have is a diamond you can do a quick visual evaluation to rule out other gemstones From

GemHunter's Guide to Finding Peridot Gemstones: GemHunter

Lamproite is only one of two host rocks mined for commercial amounts of diamonds in the world To verify the quality of the Wyoming peridot gemstones many were cut in Sri Lanka and sent back to the Geological Survey in Laramie where the faceted stones were displayed in the foyer at the Dr Daniel N Miller building on the UW campus

In What Rock Formations Can Gold Be Found?

Intrusive rock is formed when molten magma is pushed between layers of existing rock Intrusive rock is typically very hard and erodes slowly This allows the surrounding rock to be worn away by wind and water leaving only the harder rock in place Heavy particles such as gold are likely to accumulate against the harder rock while the

Diamond Crystals (natural diamond)

Apr 06 2015The size of the diamond crystal is approximately 6 8mm x 6 8mm and the overall size of the host rock is 45mm x 27mm and weighs over 36 grams The specimen was recovered at about the 500 meter depth of the Udachnay pipe which is located 600 K M to the north from the city of Mirniy We estimate the diamond crystal to weigh nearly 1 5 carats

GemHunter's Guide to Finding Peridot Gemstones: GemHunter

Lamproite is only one of two host rocks mined for commercial amounts of diamonds in the world To verify the quality of the Wyoming peridot gemstones many were cut in Sri Lanka and sent back to the Geological Survey in Laramie where the faceted stones were displayed in the foyer at the Dr Daniel N Miller building on the UW campus

GOLD PROSPECTS

Nov 13 2011The Gemhunter a polymath of rocks martial arts stars pencil written word public speaking A Hall of Fame Martial Artist Geologist Author and Public Speaker Look for numerous blogs by the GemHunter on gemstones gold and martial arts designed to help the reader learn about these subjects View my complete profile

Other Stones and Gems to be found at Crater of Diamonds

There's been a lot of chatter about the 8 52 carat diamond found recently at the Crater of Diamonds State Park near Murfreesboro The stone is a stunner for sure But this story and photos from travel writer Cameron Reeder from Alabama show there is more to be found at the park