Natural Limestone (Fla)

FloridaDigger

Jr. Member
May 6, 2012
38
11
Central Florida
Detector(s) used
Fisher F4, Garrett ProPointer
Primary Interest:
Metal Detecting
I have a Fisher F4 and have found a very strong signal (90-100) above a large limestone slab. Could this be natural occurring with limestone? My Pinpointer also shows a broad area (square meter) of strong signal on top of the limestone formation. I'm new at this and before I dig any more, I want to know if Limestone can give off this kind of reading. Thanks...
 

YankeeDownSouthAdv.

Bronze Member
Jun 28, 2005
1,353
189
alachua county, FL
Detector(s) used
Equinox 800
Nokta Legend
Primary Interest:
All Treasure Hunting
could be rebar or something under the slab?? or is it just a large formation of limestone? Or is the slab your refering to a old home slab?
 

OP
OP
FloridaDigger

FloridaDigger

Jr. Member
May 6, 2012
38
11
Central Florida
Detector(s) used
Fisher F4, Garrett ProPointer
Primary Interest:
Metal Detecting
ocalasix said:
could be rebar or something under the slab?? or is it just a large formation of limestone? Or is the slab your refering to a old home slab?

Thanks for responding. At first, I thought it was an old septic tank cover until I got a better look at it. I uncovered a two foot section and its clearly a natural limestone formation.
 

lastleg

Silver Member
Feb 3, 2008
2,876
658
Seriously, check the bottom of your coil to see if there is a silver dime stuck to it.
 

OP
OP
FloridaDigger

FloridaDigger

Jr. Member
May 6, 2012
38
11
Central Florida
Detector(s) used
Fisher F4, Garrett ProPointer
Primary Interest:
Metal Detecting
lastleg said:
Seriously, check the bottom of your coil to see if there is a silver dime stuck to it.

Naw, just a gold coin. Must be something else causing the high readings.
 

YankeeDownSouthAdv.

Bronze Member
Jun 28, 2005
1,353
189
alachua county, FL
Detector(s) used
Equinox 800
Nokta Legend
Primary Interest:
All Treasure Hunting
keep an eye out for my new post tomorrow about a hunt we are organizing north of us here ( we r in gainesville.)
 

cra61

Full Member
Jul 9, 2012
124
37
Central Florida
Detector(s) used
Teknetics G2+
Garrett AT Pro
Garrett "carrot" Pinpointer
Primary Interest:
All Treasure Hunting
Did you ever find out what is was? I'm in central Fl also if you need a hand flipping or digging under or what ever you need to do.
Rick
 

Bum Luck

Silver Member
May 24, 2008
3,482
1,282
Wisconsin
Detector(s) used
Teknetics T2SE, GARRETT GTI 2500, Garrett Infinium
Primary Interest:
All Treasure Hunting
I'd say that reading would be unusual for limestone; I'd be tempted to check it further.
 

mical66

Hero Member
Jul 17, 2012
728
223
Greeneville , TN
Primary Interest:
All Treasure Hunting
my question is will a detector read thru 1 - 2 foot of limestone ? i know it will read rebar in concrete .
if it can read thru limestone then i wouldl say flip it or bust it . of course after you check for any hole that may hold a nail or drill bit or even a bullet ?
 

Harp

Greenie
Jul 22, 2012
13
1
FL
Detector(s) used
Fisher CZ-7 Quicksilver
Primary Interest:
All Treasure Hunting
If it was me I'd have to check it... If you scan further on limestone and get no reading, but do in one spot, it's got to be something, right?
 

Harp

Greenie
Jul 22, 2012
13
1
FL
Detector(s) used
Fisher CZ-7 Quicksilver
Primary Interest:
All Treasure Hunting
If it was me I'd have to check it... If you scan further away on limestone and get no reading, but do in one spot, it's got to be something, right? Could it be a cache? Won't know without getting to it. I've dug more trash than treasure, but at least it answers the question: "What is it?"
 

Bum Luck

Silver Member
May 24, 2008
3,482
1,282
Wisconsin
Detector(s) used
Teknetics T2SE, GARRETT GTI 2500, Garrett Infinium
Primary Interest:
All Treasure Hunting
my question is will a detector read thru 1 - 2 foot of limestone ? i know it will read rebar in concrete

That answers your question.
 

Bigdogdad

Bronze Member
Mar 5, 2012
1,627
437
Primary Interest:
Cache Hunting
Do you know what "tabby" concrete is? It is a very old 100+ years way of making concrete. It has large rocks in it. Could what your looking at be "tabby"? It could have rebar in it. Don't stop until you figure this out one way or another. Get a big electric hammer drill and see what is inside it. Some of the drills will also accept a chisel blade for busting concrete/limestone. I have one.
 

russ

Full Member
Jul 30, 2012
169
170
Detector(s) used
fieldmaster fx 55 c scope cs 4pi
Primary Interest:
Beach & Shallow Water Hunting
I would, even if its just so youll know, if the same thing happens in the future.
 

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