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Old 11-04-2017, 02:29 PM
 
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Is this Stone, commonly found in Miami backyards and Gardens limestone?
Attached Thumbnails
Is this limestone? Pic included-1509826979931-1237735574.jpg  
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Old 11-06-2017, 03:20 PM
 
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probably
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Old 11-06-2017, 08:04 PM
 
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Thanks
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Old 11-06-2017, 08:48 PM
 
Location: Doral
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If it's in Miami, and a rock, it's probably limestone.

https://mrdata.usgs.gov/geology/stat...unit=FLPSm%3B0
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Old 11-07-2017, 02:56 PM
 
Location: Heartland Florida
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It depends on whether it was from here or quarried elsewhere. I have found granite and river rocks that had come with fill. Even found rocks with mica flaking off. Sandstone is also found in certain areas. The rock you show has irregular edges consistent with limestone fragments. In the Keys the limestone often has brown staining from tannic acid or even some iron deposits. In Miami limestone has voids that are smaller from Ooids
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Old 11-08-2017, 07:46 AM
 
Location: Florida
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Yes, it's limestone mostly made up of coral.
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Old 11-08-2017, 07:51 AM
 
Location: Raleigh
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If it's not plain limestone it's what we called 'coral rock', which is limestone from an obvious source. Florida is pretty much a limestone spine with debris washed down from the Appalachians over the last few million years.
Limestone substrate, hence all the sinkholes. Limestone dissolves in acidic rain. Rain Is acidic due to the CO2 content, hence all the caverns.
To test for limestone pour a little vinegar on it.
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Old 11-26-2017, 06:11 PM
 
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Great replies, thanks!
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