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A general guide for using the Forum with some rules and tips
Identification and more information
  
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AmberH




Joined: 07 Jun 2018
Posts: 5
Location: Levy county Florida

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PostPosted: Jun 28, 2018 13:24    Post subject: Identification and more information  

I'm new to this forum and to collecting. Everything I have I collected myself, and either I have a knack for sniffing out the locations or there's a significant abundance of what I am finding. I am located in West Central Florida at the base of the Withlacoochee River and the Gulf of Mexico and have dug most out of the much during low tide either on the islands, river bank or barge canal usually with a steep decline creating caves only visible at low tide. I have contacted the Florida geological society seeking identification being as my research yielded little in regards to the area. It seems most documented calcite, which I believe it is due to the effervescence effect from vinegar as suggested by the geological society, is found in bivalves in Rucks Pit near Okeechobee. I am finding 2 different specimens though, ones that look like just much coming together and form the crystals and the other is in dolomite maybe? I'm seeking any further information and/or expertise anyone has to offer, even if these are worthy of adding to a collection. I forgot to mention the coloration & shape, the ones that grow in the possible dolomite are small teeth like shards with different layers in opposite directions and brown to clear. The other are more bulbous with some smaller crystalline structures ranging from yellow gold to hazy clear. I appreciate any input and information, thanks!!
Amber



IMG_20180626_110529.jpg
 Mineral: Calcite?
 Description:
The pics added are of the different ones I've collected, some are of the same one which is the largest.
 Viewed:  460 Time(s)

IMG_20180626_110529.jpg



IMG_20180626_111152.jpg
 Mineral: Calcite?
 Dimensions: 10.16 cm across the top
 Description:
 Viewed:  460 Time(s)

IMG_20180626_111152.jpg



IMG_20180626_112047.jpg
 Mineral: Calcite?
 Description:
These are the smaller shard like ones that are smaller in structure and possibly in dolomite
 Viewed:  459 Time(s)

IMG_20180626_112047.jpg



IMG_20180626_110212.jpg
 Dimensions: 30.8 cm by 30.8 cm
 Description:
A broader view of my largest specimen
 Viewed:  458 Time(s)

IMG_20180626_110212.jpg


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Jordi Fabre
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Joined: 07 Aug 2006
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PostPosted: Jun 30, 2018 13:47    Post subject: Re: Identification and more information  

Hi AmberH, welcome to FMF

Considering its visual aspect as well as the tests you did, everything you have seems to be Calcite. Anyway, you can do an easy test to check if you have some Dolomite there. Dolomite will produce almost no reaction (dissolves or fizzes) in vinegar so if you test it with vinegar and there is very little reaction (you can compare with a Calcite) then it could be Dolomite.

Jordi
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