FMF - Friends of Minerals Forum, discussion and message board

Thank you again! :-)

Does that mean cutting at a different angle if first cut points me to that direction? :-)

Thank You :-) Yes, I thought it might be chert as well, but I was told it was Agate. The very dark stone visible on the broken face with the moss feature reminds me of flint. Anyway, it will be int ...

Thank you :-) I suppose that would mean cutting it along my "green line 2" . The moss-like feature has the larger surface area. The stone is an odd sort of shape and is really colorful wit ...

Hello :-) I found what I think is an Agate and I would like to cut it open or slice it to see what's inside, but I don't know how to identify the direction of the banding. I found this rock on a bea ...

That is brilliant! Thank you so very much!! :-) It really puzzled me because from the few rocks I have been able to collect here, the calcite crystals I've seen have always had this triangular or py ...

Thank you so much again for all your information! Really appreciated :-) Yes, I need to look out for more but I don't hold out much hope. The island here is quite small and there are only limited p ...

OK :-) That's interesting. I didn't know calcite can grow in cubes like this. I thought it's similar to quartz (sort of pointy angular). That's why I always get confused about distinguishing small ...

Hi all :-) Could you please help me identify this cube shaped mineral? I found this rock with a few small cavities. They are filled with either quartz or calcite. Not sure which exactly :-/ Insid ...

I have now tried the scratch test against a stainless steel knife. Some isolated mineral crumbs from the rock sample did not scratch the knife surface when I rubbed them against the knife surface. I ...

Thank you again! :-) You give me so much information. I'm very grateful! I am going to crush one of the smaller rocks and try separate all the metal elements as best I can. Then I will try what y ...

Well, taking all the information into consideration, I think it must either be pyrrhotite or galena :-) I will try and collect sufficient of the material to do a streak test. But I wonder if they wo ...

I tried scratching some of the specks with a needle. Difficult because they are so small. They seem hard and a tiny fragment of quartz came off with a metal speck left on it. It literally flew towa ...

I tried the magnet test, and you are right. The Ferrite magnet doesn't have any effect on the small rock. The Neodymium of course pulls it straight away. I can't test the other rocks because they a ...

Oh! :-D That sounds confusing! Not sure how to tell the difference with the small sample size I have :-/ But I'll continue to investigate to still my curiosity :-D Thank you :-)

Author	Message
Topic: In what direction do I cut my Agate?
GabiG Replies: 9 Views: 17887	Forum: FOR BEGINNERS: What is it? Where is it from? Posted: Mar 05, 2020 04:22 Subject: Re: In what direction do I cut my Agate?
GabiG Replies: 9 Views: 17887	Thank you again! :-)
Topic: In what direction do I cut my Agate?
GabiG Replies: 9 Views: 17887	Forum: FOR BEGINNERS: What is it? Where is it from? Posted: Mar 04, 2020 12:42 Subject: Re: In what direction do I cut my Agate?
GabiG Replies: 9 Views: 17887	Does that mean cutting at a different angle if first cut points me to that direction? :-)
Topic: In what direction do I cut my Agate?
GabiG Replies: 9 Views: 17887	Forum: FOR BEGINNERS: What is it? Where is it from? Posted: Mar 04, 2020 04:43 Subject: Re: In what direction do I cut my Agate?
GabiG Replies: 9 Views: 17887	Thank You :-) Yes, I thought it might be chert as well, but I was told it was Agate. The very dark stone visible on the broken face with the moss feature reminds me of flint. Anyway, it will be int ...
Topic: In what direction do I cut my Agate?
GabiG Replies: 9 Views: 17887	Forum: FOR BEGINNERS: What is it? Where is it from? Posted: Mar 03, 2020 11:46 Subject: Re: In what direction do I cut my Agate?
GabiG Replies: 9 Views: 17887	Thank you :-) I suppose that would mean cutting it along my "green line 2" . The moss-like feature has the larger surface area. The stone is an odd sort of shape and is really colorful wit ...
Topic: In what direction do I cut my Agate?
GabiG Replies: 9 Views: 17887	Forum: FOR BEGINNERS: What is it? Where is it from? Posted: Mar 03, 2020 10:36 Subject: In what direction do I cut my Agate?
GabiG Replies: 9 Views: 17887	Hello :-) I found what I think is an Agate and I would like to cut it open or slice it to see what's inside, but I don't know how to identify the direction of the banding. I found this rock on a bea ...
Topic: Interesting cube shaped mineral surrounded by quartz or calcite inside a rock
GabiG Replies: 6 Views: 10322	Forum: What is it? - Where is it from? Posted: Dec 31, 2019 05:16 Subject: Re: Interesting cube shaped mineral surrounded by quartz or calcite inside a rock
GabiG Replies: 6 Views: 10322	That is brilliant! Thank you so very much!! :-) It really puzzled me because from the few rocks I have been able to collect here, the calcite crystals I've seen have always had this triangular or py ...
Topic: Interesting cube shaped mineral surrounded by quartz or calcite inside a rock
GabiG Replies: 6 Views: 10322	Forum: What is it? - Where is it from? Posted: Dec 30, 2019 15:05 Subject: Re: Interesting cube shaped mineral surrounded by quartz or calcite inside a rock
GabiG Replies: 6 Views: 10322	Thank you so much again for all your information! Really appreciated :-) Yes, I need to look out for more but I don't hold out much hope. The island here is quite small and there are only limited p ...
Topic: Interesting cube shaped mineral surrounded by quartz or calcite inside a rock
GabiG Replies: 6 Views: 10322	Forum: What is it? - Where is it from? Posted: Dec 30, 2019 14:21 Subject: Re: Interesting cube shaped mineral surrounded by quartz or calcite inside a rock
GabiG Replies: 6 Views: 10322	OK :-) That's interesting. I didn't know calcite can grow in cubes like this. I thought it's similar to quartz (sort of pointy angular). That's why I always get confused about distinguishing small ...
Topic: Interesting cube shaped mineral surrounded by quartz or calcite inside a rock
GabiG Replies: 6 Views: 10322	Forum: What is it? - Where is it from? Posted: Dec 30, 2019 11:57 Subject: Interesting cube shaped mineral surrounded by quartz or calcite inside a rock
GabiG Replies: 6 Views: 10322	Hi all :-) Could you please help me identify this cube shaped mineral? I found this rock with a few small cavities. They are filled with either quartz or calcite. Not sure which exactly :-/ Insid ...
Topic: Specks of white shiny magnetic metal - are they iron, nickel, or chalcopyrite?
GabiG Replies: 18 Views: 17468	Forum: What is it? - Where is it from? Posted: Dec 25, 2019 09:13 Subject: Re: Specks of white shiny magnetic metal - are they iron, nickel, or chalcopyrite?
GabiG Replies: 18 Views: 17468	I have now tried the scratch test against a stainless steel knife. Some isolated mineral crumbs from the rock sample did not scratch the knife surface when I rubbed them against the knife surface. I ...
Topic: Specks of white shiny magnetic metal - are they iron, nickel, or chalcopyrite?
GabiG Replies: 18 Views: 17468	Forum: What is it? - Where is it from? Posted: Dec 24, 2019 05:01 Subject: Re: Specs of white shiny magnetic metal - are they iron, nickel or chalcopyrite?
GabiG Replies: 18 Views: 17468	Thank you again! :-) You give me so much information. I'm very grateful! I am going to crush one of the smaller rocks and try separate all the metal elements as best I can. Then I will try what y ...
Topic: Specks of white shiny magnetic metal - are they iron, nickel, or chalcopyrite?
GabiG Replies: 18 Views: 17468	Forum: What is it? - Where is it from? Posted: Dec 23, 2019 13:25 Subject: Re: Specs of white shiny magnetic metal - are they iron, nickel or chalcopyrite?
GabiG Replies: 18 Views: 17468	Well, taking all the information into consideration, I think it must either be pyrrhotite or galena :-) I will try and collect sufficient of the material to do a streak test. But I wonder if they wo ...
Topic: Specks of white shiny magnetic metal - are they iron, nickel, or chalcopyrite?
GabiG Replies: 18 Views: 17468	Forum: What is it? - Where is it from? Posted: Dec 23, 2019 08:45 Subject: Re: Specs of white shiny magnetic metal - are they iron, nickel or chalcopyrite?
GabiG Replies: 18 Views: 17468	I tried scratching some of the specks with a needle. Difficult because they are so small. They seem hard and a tiny fragment of quartz came off with a metal speck left on it. It literally flew towa ...
Topic: Specks of white shiny magnetic metal - are they iron, nickel, or chalcopyrite?
GabiG Replies: 18 Views: 17468	Forum: What is it? - Where is it from? Posted: Dec 23, 2019 07:58 Subject: Re: Specs of white shiny magnetic metal - are they iron, nickel or chalcopyrite?
GabiG Replies: 18 Views: 17468	I tried the magnet test, and you are right. The Ferrite magnet doesn't have any effect on the small rock. The Neodymium of course pulls it straight away. I can't test the other rocks because they a ...
Topic: Specks of white shiny magnetic metal - are they iron, nickel, or chalcopyrite?
GabiG Replies: 18 Views: 17468	Forum: What is it? - Where is it from? Posted: Dec 23, 2019 06:18 Subject: Re: Specs of white shiny magnetic metal - are they iron, nickel or chalcopyrite?
GabiG Replies: 18 Views: 17468	Oh! :-D That sounds confusing! Not sure how to tell the difference with the small sample size I have :-/ But I'll continue to investigate to still my curiosity :-D Thank you :-)