Where can you find a rock that has crystals inside of it?
915108
If you mean a geode or a thunder egg, just type in geode on eBay and a ton of them will come up.\n\nDifferent geodes and thunder eggs have different types of minerals inside of them. Mexican Coconut geodes come in small to large sizes and usually have large quartz crystals inside of them which are typically white, smokey, purple (amethyst) or orange/purple (amatrine).\n\nKeokuk geodes often have a fine dusting of small calcie crystals in them. When crystals are small enough to give a glittering effect, the mineral is said to be druzy.\n\nSome geodes or thunder eggs just have a chalcedony coating inside of them an no crystals. This is common in Keokuk geodes.\n\nCelestite geodes have baby blue celestite crystals in them and are usually very prized. Another very priced species are Baker Ranch thundereggs. They often have elaborate bands of pinkish and red agate as well as quartz. Some of these, and other geodes have been filled in all the way and are called nodules. They are typically polished and made into book ends in they're large enough, or sliced and polished and used in other crafts.\n\nA similar formation are cathedrals. Cathedrals come from Brazil and look like staligmites that are hollow and are lined with crystals inside. These are very expensive and range in size from about that of a pumpkin to over 6ft tall. They are almost always lined with amethyst or citrine, which is an orange variety of quartz.
900927
Well, in things like pegmitites, late stage crystalized rocks, you can have very high amounts of incompatable elements, like Li, Au, Ag, B, Zr, and many more.  That's why you get minerals like beryl, lepidolite, tourmaline, etc.
897783
Also check out the " Four Peaks Amethyst Mine", its in Arizona. It will give you additional information which you are seeking.
546834
Native silver, that is to say pure silver, is very rare.  Most silver is locked up in other minerals.  Galena, the primary lead ore, looks something like silver, but has only 6-10% silver in it.  Silver is found in the sulfide enriched zones of copper mines, in tellurides, and many other ores.  Here's a few rockhound links,  just search Silver or Ag, and/or ores, and big pix will come up.\n\n\nhttp://www.mindat.org\nhttp://www.mining-technoloy.com/projects/index.html\nhttp://www.earthsci.org/teacher/bgasicgeol/resource.html  \n\nand of course the one site every one in earth science must know:\nhttp://www.rockhounds.com/rockshop/table.shtml\n\n\nThere are many tricks, but hardness isn't one of them.  Blowpipe analysis, which you can do, knowing the local geology, making friends with rockhounds, varous acid & base reactivies will all help.  Read eveything on these sites, and maybe a book or three on your area.
381199
that'll be chalcedony. it differs from quatrz in it's shape, as it usually occurs in botryoidal masses, whereas quartz occurs more in hexagonal prisms. chalcedony is similar to opal, but can be distinguished by its higher specific gravity. it can be formed as a dehydration product of opal, hence the connection. the colour is highly variable, as it can be white, blue, red, green, brown or black, and varieties of chalcedony include jasper, agate, chrysoprase, onyx and carnelian. it's formed in rock cavities, especially lavas, and it develops at relatively low temperatures, whereas quartz occurs in any rock type, and usually formed at higher temperatures
490224
maybe Water-stones!!!!!
236025
Synthetic boules have been available since the 1890's (the reason sapphire/ruby synthesis was originally attempted).  There books by John Sinkankas which address this topic, the primary answers being color, orientation, appearance under magnification.  Any decent rock show will have people who can id it by sight, check this link for the nearest one.\n\nhttp://www.rockhounds.com/rockshop/table.shtml\n\nAny competent jeweler, without a financial incentive, should be able to tell you this.  I would be sure they are GIA certified in colored stones, or simply contact the GIA itself:\n\nhttp://www.gia.edu/\n\nPrice and/or setting is no method of determining if a stone is natural or not, in that even major retailers are selling fakes at full price these days.
1031720
Search for a stone like that on Ebay, and see what they go for.
120074
To see some pictures of geodes you can go to:\nhttp://www.rocksforkids.com/Rocks/geodes.html\n\nFor help on how to identify geodes, I have not been able to find a difinative website.  Most sites tell you to examine rocks that you know are geodes and find other similar rocks in the same location.\n\nAnother good siteis :\nhttp://skywalker.cochise.edu/wellerr/students/geode/Geodes.htm\n\nGeodes form under special conditions. There must be a hole in the rock and then minerals dissolved in fluids must be able to reach that hole to allow crystals to be able to form. In geodes the minerals form from the outside in, therefore the crystals point inwards. Certain types of rock are more susceptible to the formation of geodes.\n\nThe most common rocks containing geodes are lavas that contain gas pockets and carbonate rocks which contain holes where other minerals dissolved away, sometimes during the formation of the rock from the original sediment (the process is called lithification and means "turn to stone"). These rocks are common in certain areas of the country.
124812
well i know there is shist, gneiss, slate and a whole lot more visit this website and it will give you all of the metamorphic rocks that your looking for.
70332
Many rocks are a composite mixture of two or more minerals, each with its own melting and freezing temperatures.  If the rock was molten at some time in the past, it may have slowly cooled allowing the minerals to grow into separate crystals with time.  The mineral with the highest melting temperature would be first to solidify during cooling followed by the next and lastly by the mineral with the lowest melting point.\n\nLet's imagine we could make an artificial "rock" using glass marbles (high melting temperature), sugar (intermediate melting temperature) and butter (lowest temperature).  As we slowly cooled the mix, the marbles that never melted would remain then the sugar would turn from taffy to rock candy and lastly the butter would fill in all the cracks and "glue" everything together.\n\nIf our rock remained cold it would remain hard.  But if we raised the temperature to near the melting point of butter, the entire rock would "melt" and fall apart when hot; even though the sugar might only turn back to taffy while the marbles remained relatively hard.  The results would depend of course on the minerals contained in a particular rock sample and perhaps how it formed.
125196
deodorant crystal found in health food and herb shops
161864
Jeanne's Rock & Jewelry in the Bellaire Triangle (the Bissonnet side) is one of my favorites. They're very knowledgable and friendly. 713-664-2988\n\nCollector's Choice is another one I've heard of but have never visited, as well as The Crystal Store off of Ashcroft.\n\nIf you're in ever in Kemah, there are at least two good ones there you might want to try.\n\nYou might also contact the Houston Gem & Mineral Society and see if they have sponsors or members who can help.
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Answering the question would be easier if I knew which type of mineral you were looking for.  Try looking on this link:\n\nhttp://www.rockhounds.com/rockshop/table.shtml\n\nIf you are looking to purchase, there are many people willing to take your money.  For information and more reasonable prices, there are rockshops (non new age) sprinkled through out the country, and the 2 best gems shows are in Denver & Tuscon.\n\nThe next issue is size.  In different mineral species, different sizes are considered large.  For example, quartz crystals up to the size of a gallon jug are found in Mt Ida, AK while selenites have been found in Mexico up to 20 ft tall (note that these are single crystals, not undifferentiated masses).  The largest rhodocrosite is about 6.5 inches per face (in the Denver Natural History Museum), the largest calcite is around 2 foot long (Shifferdecker Museum in Joplin, Mo).  With my friends, I have found a 14" double terminated calcite in Okhlahoma, and a nearly 2 foot selenite in Kansas.\n\nSolution minerals are more typically accessable when compared  with igneous ones, but all the hugest crystals are of igneous origin.  Most of the world record holders are so big thay can never be moved from the mine, unless destroyed.\nIf you seek mineral materiel without reference to single crystals, rough is available in masses shipped in either oil barrels or box cars, usually for industry or amature lapidary work.\n\nIf you are seeking gem materiel, it is unlikely that you can find it for a price within reason, even the synthetics. \n\nIf you are seeking geodes, the warsaw shale is the place to look.  It extends through out the midwest.\n\nThere are groups of rockhounds all over, and we go forth to find exactly what you are seeking.  However, there is actual physical labor involved, and possibly travel costs.  You might consider also speaking a professor with the local college in your area.
323011
depend on the type of rock. what material or materials is it made of, is it granite or what?
149062
The question is not clear.  Are you asking what a crystal is?  Are you asking what the different crystal structures are?  Are you asking for the characteristics of crystals in general?
261483
These are igneous rocks.