Igneous and Metamorphic.
Gold and Silver. Gold and silver are commonly found in areas where igneous and metamorphic activity has occurred and are generally associated with silicic types of intrusives and Precambrian metamorphic rocks. In Kentucky, the geology is not favorable for the natural occurrence of gold or silver. Most of the surface and near-surface rocks are sedimentary, and there has not been any igneous, metamorphic, or tectonic event to allow the gold or precious metal to be concentrated in economic quantities. When performance is more important than price, silver is often the material of choice. Silver is rarely found as a native element mineral. When found, it is often associated with quartz, gold, copper, sulfides of other metals, arsenides of other metals and other silver minerals. Unlike gold it is rarely found in significant amounts in placer deposits.  Silver is found in lead, zinc, and copper ore deposits. A full two-thirds of the silver resources in the world are found in association with these other metal ores. The remaining third is found in association with deposits of gold. The most important ore mineral of silver is argentite (Ag2S, silver sulfide).  Respawn rate Edit. Silver ore, like all other mined rocks, respawns at a rate inversely proportional to the number of people in the rock's RuneScape world. If the world is empty, the ore respawns in 2 minutes; if it is full (with 2000 players), it respawns in 1 minute. Thus the respawn rate of silver ore is. Silver ore rocks. 29,169 pages onthis wiki. Silver ore rocks are protruding rocks containing silver ore. A player with a Mining level of 20 or higher can mine silver ore from rocks found in various mines, granting 40 Mining experience for each ore mined. Silver is one of the most famous precious metal s, and has been used for ornamental purposes since the earliest of times. Most silver is extracted from silver ore s, but considerable amounts are mined from Native Silver. Silver can be found pure, but is usually mixed with small amounts of gold, arsenic, and antimony. Silver has many unique physical properties that give it very special status. Silver is the best conductor of electricity, is the second most malleable and ductile metal, and is in greater abundance than all other precious metals with similar properties. It is a magnetic common mineral often found in igneous rocks. It is mined for the nickel minerals such as nickel-iron, NiFe, and annabergite, Ni3(AsO4)2.8H20, associated with it. Quartz. Quartz has the formulae SiO2 and a relative hardness of 7. It is an ore of zinc and used in the production of zinc oxide. Zircon. Zircon (zirconium silicate) has the formulae ZrSiO4 and a relative hardness of 8. It is a common accessory mineral found in all types of These are crystals of Calaverite-a gold, silver and tellurium mineral. This is very high grade gold ore from the Cripple Creek district in Colorado. Many old time miners mistook this type of mineral for low grade sulfides, but this silvery metallic material probably is 40 percent gold by weight. The gold telluride ores occur with silver, or with silver, lead and antimony, or as native gold accompanied by other tellurides. These ores are often sent direct to the smelters for treatment. A fifth type is the disseminated ore type. A natural alloy of gold and silver is known as Electrum, and is usually classified as a variety of Gold. Silver is a very resistant mineral. It does not dissolve in most solvent s, and won't react to oxygen or water. Silver has many unique physical properties that give it very special status. Silver is the best conductor of electricity, is the second most malleable and ductile metal, and is in greater abundance than all other precious metals with similar properties.
https://www.uky.edu/KGS/rocksmn/goldsilver.htm http://geology.com/minerals/silver.shtml http://www.mineralseducationcoalition.org/minerals/silver http://runescape.wikia.com/wiki/Silver_ore_rocks http://www.minerals.net/mineral/silver.aspx http://www.rocksandminerals.com/finder/H3.HTM http://nevada-outback-gems.com/prospect/gold_specimen/Gold_ores.htm http://www.minerals.net/mineral/silver.aspx
what kind of rock is silver