how often do quartz veins have gold

Do all quartz deposits contain gold? - Quora

The answer is "maybe." First things first: gold is found almost everywhere, including dissolved ... When it's directly associated with quartz, it often appears in contact zones where the host rock is intermingled with quartz deposits. ​showing ... No not all Quartz veins contain gold and not all gold is found in Quartz. Th...

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Gold, Mining and Prospecting: Gold in quartz veins

Jul 13, 2010 ... Gold is often found associated with milky hydrothermal quartz that is called “bull quartz. Although gold has many other associations with base metals this is ... Gold can be found in just about any rock, sometimes in specks that...

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Quartz - GemHunter

When found in veins (or in geodes), “quartz” can occur as individual crystals, tiny clusters of ... Some quartz veins have uncommon visible gold filling fractures.

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Gold Prospecting and Hunting Tips for the Rich Hill Mining Area

It tends to clog the foot valve of the pump and precautions can be taken to ... I put a pretty good amount of weight on trumpet plants when I prospect. Locating ... Many quartz veins have eroded out their gold while others still entomb their values.

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Characteristics of Gold - The New 49ers

Nov 23, 2011 ... Scientists have recently discovered that gold can be artificially produced by ... than the quartz rock which it is commonly associated with when gold is found in .... Veins which contain valuable minerals are referred to as “lodes.

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Vein (geology)

A quartz vein, prominent from the surrounding weathered rock. In geology, a vein is a distinct sheetlike body of crystallized minerals within a rock. Veins form when mineral constituents carried by ...

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The Quartz Page: Occurrence

These are cracks in the rock that have been filled with various minerals ... The cracks are often formed during the intrusion of the magma, ... In many cases, quartz can be found at any distance from the ... found in placer deposits: a quartz vein that contained native gold.

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Bedrock Dreams: Characteristics of Gold-Bearing Quartz Veins (Part 1)

Feb 11, 2011 ... I'm no geologist, but as a hard-rock or placer gold miner I do know that ... Quartz veins that contain iron sulphides or oxides are pretty easy to spot ... is just that and it is very similar to the colors found when when old iron is left...

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GOLD - SBS

It has been crafted, mined, worshipped, plundered, fought over and traded for ... intended to give gold greater hardness when used in jewellery, have been given ... Veins and reefs of gold-bearing quartz can occur in many types of rock, for...

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Lateral Science - Getting Gold - Chapter 2

All of us who have had much to do with mining know that the majority of the best mineral finds have been made by the purest accident; often by men who had no .... will realise that /all/ alluvial gold does not come from the quartz veins or reefs;...

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Photos of gold ores, quartz, telluride gold ore and gold specimens

This piece of gold ore does not look very spectacular, but millions of tons of this ... The ore consists of silicified rock that often was originally some sort of limy shale. ... This small but rich specimen slab is from a narrow quartz vein found in Russia. ... Sections of gray colored quartz in the specimen have this appearance....

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gold mixed with quartz. when gold is trapped in quartz veins.

When you do find quartz and gold together, examine it, Does it have worn edges or ... Of course we are always looking for the source of gold veins even while...

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Earthquakes make gold veins in an instant : Nature News & Comment

Mar 17, 2013 ... Scientists have long known that veins of gold are formed by mineral ... today in Nature Geoscience has found that the process can occur almost ... reasons that the rocks in gold-bearing quartz deposits are often marbled with a...

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Gold in Quartz Rock – Specimen Ore Crushing | RareGoldNuggets ...

Jul 20, 2015 ... Often these gold in quartz specimens are very beautiful and interesting, ... Any type of quartz or rock that has visible gold veins in it should be...

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Where Gold Comes From, Lode Gold at Hatcher Pass, Alaska

When chasing tiny gold enclosed in quartz a high frequency detector like the ... Note that most quartz veins do not contain gold, so quartz alone means little.

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Pyrite - Sandatlas

Sedimentary rock shale containing cubes of pyrite and veins of quartz. ... Oxygen was consumed by decomposing organic matter or maybe we should say it ... Hydrothermal pyrite has been frequently mistaken for gold and therefore the name...

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Quartz-Tourmaline Veins in the Northern Sierra Nevada Area

Many copper-bearing quartz- tourmaline veins contain appreciable gold ñ silver, ... occurring only in clearly skarn-related mineralized areas, often adjacent to plutons. ... It appears that most of the quartz- tourmaline veins should be considered...

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Forming Deposits - American Museum of Natural History

Gold may occur as deposits called lodes, or veins, in fractured rock. ... Low sulfur, gold-bearing hydrothermal fluids form when hot rocks heat ground water. ... Hydrothermal fluids flow into these spaces and form gold-bearing quartz veins.

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Gold in Maryland - Maryland Geological Survey

The metal occurs as grains, wires or sheets in quartz veins and along mineralized ... In the copper districts of Maryland, gold has often been noted as a minor ... of which can compare with the few enormously productive mines.. the west, and...

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