Need some help with this

[tarpon192]

I don't know very much about crystals, but I do know a little. When I say a little, I mean a little. This chunk weighs over 16 pounds.
I have done lots of searches on the internet, and it is mind blowing. Ton's of info.
Thanks in advance.

Tarpon192.

 

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[Brian T. Booth]

I don't know very much about crystals, but I do know a little. When I say a little, I mean a little. This chunk weighs over 16 pounds. I have done lots of searches on the internet, and it is mind blowing. Ton's of info. Thanks in advance. Tarpon192.

I believe what you have is a great specimen of calcite. Do a acid test using vinegar. If the specimen fizzes, then you definitely have calcite.

 

[tarpon192]

I believe what you have is a great specimen of calcite. Do a acid test using vinegar. If the specimen fizzes, then you definitely have calcite.

Are you saying pour some vinegar on it? What kind of vinegar, and what is going to fizz - the crystal itself?
Thanks.

 

[tarpon192]

Do I need to break a piece off?

 

[elgatodelnoche]

No just pour vinegar on a small section. You could shoot a little bit from a squirt bottle or hypodermic syringe if you have one. The effect will be immediate fizzing and foaming of the crystal that is hit with the vinegar.

 

[Turkısh Man]

İt needs hardnes test,calcite hardnes 3,quartz variatıons hardnes 7.

 

[tarpon192]

I put vinegar on it, and nothing happened.

 

[Brian T. Booth]

I don't know very much about crystals, but I do know a little. When I say a little, I mean a little. This chunk weighs over 16 pounds. I have done lots of searches on the internet, and it is mind blowing. Ton's of info. Thanks in advance. Tarpon192.

If you can, take more photos of the top part of the specimen.

 

[MrLee]

Here is a link mama posted on another thread. First, start out with the area you found it in. Every inch of this country has been prospected, maybe not thoroughly, but looked at at least once and there is probably a record of what's in those hills. http://www.google.com/url?sa=t&rct=...=3fv8Xr_JOuRgrD0a9CW8MA&bvm=bv.57967247,d.b2I

From there you can narrow down your search to the usual suspects and before you know it your a rockhound and a geologist!

 

[tarpon192]

Here are some other pictures.
Hand and foot included.

 

[loco oro]

looks like quartz man, another thing you can do to begin to narrow it down is take a hammer and chip a small piece off ,then smash that small piece,if you smell a sulphure smell ,then you know you have a sulphide,if you have calcite,when you break that small piece ,it will have (perfect)cleavage,which means the break will have flat ,anglular sides to it , when calcite is massive gangue ,like your piece there, it will break like this.take a small piece and see if it will scratch a piece of unpainted steel,quartz is hard enough to scratch steel,you must press rather hard tho.if it is calcite or something softer than quartz it will just leave a streak.hope this helps a little.

 

[Brian T. Booth]

Here are some other pictures. Hand and foot included.

That definitely has cleavage. I still think you have calcite. Did you try putting vinegar on multiple places on the specimen, to see if you have a reaction?

 

[mamabear]

awesome rock. Yes I think dog tooth calcite, but do the tests, & go to local library to look at their rock books.

 

[Eu_citzen]

I have on one occasion seen flourite in a similar fashion.