Can someone help me figure out this rock??

The first thing that popped into my head was gypsum. But farmerman will know better.

right on.. Thanks I look forward to hearing from farmerman too

As an erstwhile rockhound Bryck I too am curious. Its shape suggests it might have been tooled, as with the "Indian" arrowhead, jasper, usu brown, red, yellow, black though sometimes white; or obsidian, usu black

Perlite is a white volcanic glass but usu chunky. The color and some of the surface formations suggest howlite, which however isn't glassy. Plain old quartz, though might qualify, and here my Better Half agrees

Bryck can you send a snapshot closeup or two

I will take some closeup photos and post them here in a couple minutes Thanks for your input, I have been dying to figure this rock out, lol.. there are other rocks similar to this one in that area of the yard, but only in that area...

Here are some more photos closeup... well as close as i could get clearly that is...
http://imageupper.com/g/?S020001003O135802272046434

Thank you Bryck for those. How would you describe the surface, it looks smooth and glassy

Can you describe the soil in which it occurs

But I'm no means an expert. Try here:

http://www.nuggetshooter.ipbhost.com/index.php?showforum=6

We have red clay and i believe limestone... The surface is jagged (tho not at all sharp) and glassy

Could well be. The rock form isn't glassy but if you whack off a chunk, gypsum ought to be angled and maybe transparent

Yes Farmer, help us

http://www.mii.org/minerals/photogyp.html

Maybe clear limestone, calcite. Apply a little acid, see if it fizzes

well we dipped it in muriatic acid b/c i read that's a good way to tell fools gold from real... it said the fools gold would fiz and dissolve, but nothing happened... does that count for a good type of acid?? that's the only thing we tried, but like i said, nothing happened, to the rock, or the gold-colored spots... does that mean those gold-colored spots might be mica??

Its called "ferruginous quartz". It means that , in the segments of the rrock's fabric, there are layers of iron and manganese dioxide (called "wad"). Do you live on the East Coast near the Appalachians? or else in the area of the SIerras"
The quartz is a kind of milky quartz that can often contain heavy minerals inclusing silver and gold. Id scrape off some of the metallic stuff and hold a magnet over it.
Did you find this at an outcrop or just a busted up chunk?

if you dip fools gold in muriatic acid, nothing will happen. If you take a hunk nd hold it in a candle flame, you should smell sulfur dioxide or a rotten egg smell. Thats indicative of pyrites in the field.
The gold stuff could be bronzy mica (phlogopite) You can test this by rubbing it off an looking at it in a hand lens, mica will look shiny and flaky. You could also (After you get rid of the acid residua) rub it on your hnds and itll look a lot like "Glitter" (In fact, thats what glitter used to be made of)

Ok cool... we had absolutely NO idea what this rock was, and a big thank you to everyone for your help.... Now to answer you question farmer, we live about 100 miles south of the Appalachians and and about 100 miles from the coast... we are in Gray, Ga to be specific... we found it in our garden that we till up every year... so I guess it was a foot or so underground.. there may be more down there... there are a few pieces similar to this one in there... do you think it could be something pretty awesome, or just a nice rock??

ok i def think it is mica now, b/c it does have a "glitter" effect on the hands...

yep, you should get the state geology map of your area and youll see the Appalachian Front and the various "clines" have veins and big arms of thie irony quartz. There was a fairly decent "gold rush " un and around the Georgia/South Carolina lines. In fact, I think that South Carolina is still the third biggest gold producing state in the US.

The everyday name for your rock is "Bull Quartz" cuz its a real pain to farm around and it used to bust up farm implements in the days of horse drawn plows and harrows.

Looking at some of the picz, you may have some lead or silver in there along with the iron and manganese

The quartz is a very resistant rock, lft iover from the veins or the granitic emplacements. If its quartz from granites or granodiorites, there would be a lot of red clay surrounding the quartz and you could probably dig deeper and find more and more. Its a pain in the garden so if its clay rich, you want to get the soil more permeable.
DO NOT USE SAND, if you mix sand in with the clay, youre gonna make CEMENT nd youll always have a spot in which rain will pond and all you could grow is rice.

Ill check in later, I gotta help with supper

Evident hydrochloric is much used, diluted 'way down I think but I don't know how much; maybe one of those links below will tell

Mica does often come in gold. However it's usu easy to ID 'cause it scratches and flakes so easily Gold is soft and scratches but of course doesn't flake

http://www.google.ca/#hl=en&tbo=d&sclient=psy-ab&q=does+calcite+fizz+acid&oq=acid+calcite+fizz&gs_l=serp.1.0.0i8i30l2.165832.170862.0.184044.17.15.0.2.2.0.227.1741.7j7j1.15.0.les%3B..0.0...1c.1.TjcCSwbT9qE&pbx=1&bav=on.2,or.r_gc.r_pw.r_qf.&fp=f15e9a7982de076e&biw=1385&bih=765

http://www.google.ca/#hl=en&tbo=d&sclient=psy-ab&q=test+for+fool%27s+gold&oq=test+for+fool%27s+gold&gs_l=serp.12..0i8.34847.37472.4.42806.8.8.0.0.0.1.540.1388.2j5j5-1.8.0.les%3B..0.0...1c.1.NKDje-E_N-8&pbx=1&bav=on.2,or.r_gc.r_pw.r_qf.&fp=f15e9a7982de076e&biw=1385&bih=765

thats awesome so do you think there may possibly be a chance of finding some precious metals in there or maybe in other one's like it?? To look at geography maps, what specifically do i need to be looking for?? also, where would be the best place to find the maps??

Upon closer inspection of the photo's, it now appears to simply be grey quartz.