A general guide for using the Forum with some rules and tips
The information provided within this Forum about localities is only given to allow reference to them. Any visit to any of the localities requires you to obtain full permission and relevant information prior to your visit. FMF is strictly against any illicit activities related to collecting minerals.
|
Search found 86 matches |
Author | Message |
---|---|
![]() |
|
kushmeja Replies: 31 Views: 23831 |
![]() |
Looks like a Limonite concretion to me. | |
![]() |
|
kushmeja Replies: 7 Views: 7647 |
![]() |
I'd go with limonite concretion then. I find stuff like this where I hunt for fossils shark teeth by Holmdel, NJ. They have a wide variety of shapes & slightly varied composition, so they sometime ... | |
![]() |
|
kushmeja Replies: 7 Views: 7647 |
![]() |
Looks more like a homogenous rock / mineral to me from your pics, and I'm not seeing any mica or garnet either. Although eroded garnets in schist would have a similar surface texture, you would see th ... | |
![]() |
|
kushmeja Replies: 9 Views: 9083 |
![]() |
Looks like Prospect Park Quarry in New Jersey, USA, or possibly one of the other NJ trap rock quarries. Datolite of similar appearance is found there, and with the same associated minerals too. I have ... | |
![]() |
|
kushmeja Replies: 12 Views: 9963 |
![]() |
The black is Hematite & the gold is Rutile. It is from Novo Horizonte, Bahia, Brazil. | |
![]() |
|
kushmeja Replies: 6 Views: 6281 |
![]() |
Almost certainly NOT platinum - extremely unlikely to just find a nugget of platinum anywhere, and for sure not TX.
It's probably pyrite, aka fool's gold, but it is impossible to tell for sure base ... |
|
![]() |
|
kushmeja Replies: 6 Views: 6214 |
![]() |
Yeah, this isn't really the place for your questions.
I will say that you should be more concerned about the hardness & durability of the stone that you use. There are lots of inexpensive stone ... |
|
![]() |
|
kushmeja Replies: 11 Views: 9343 |
![]() |
Looks like carnelian or sard, which are basically just slightly different forms of Quartz. But they wouldn't be an 8.5 hardness and should be closer to 7. An 8.5 hardness is quite high, so I would try ... | |
![]() |
|
kushmeja Replies: 18 Views: 22743 |
![]() |
I would agree that most PA rutiles are pretty eroded for sure, but I have this one that is from Parkesburg that is quite sharp, and there are also pics on Mindat of a few with very sharp edges as well ... | |
![]() |
|
kushmeja Replies: 18 Views: 22743 |
![]() |
Could be from Chester County, Pennsylvania. Most of the PA rutiles have striations like yours, and similar twins occur there as well.
I have a lot of Grave Mountain rutiles & have a focus on th ... |
|
![]() |
|
kushmeja Replies: 12 Views: 11975 |
![]() |
It looks like Goethite, which is an iron oxide mineral that matches up with the hardness & streak. but not Magnetic test. Goethite concretion is possible I suppose but it must be magnetic. Cant i ... | |
![]() |
|
kushmeja Replies: 12 Views: 11975 |
![]() |
It looks like Goethite, which is an iron oxide mineral that matches up with the hardness & streak. | |
![]() |
|
kushmeja Replies: 9 Views: 22230 |
![]() |
If you are just looking to remove iron residue, I would use Super Iron Out - it's cheap & it's not nearly as toxic as most of the other options. It shouldn't harm quartz or feldspar whatsoever, bu ... | |
![]() |
|
kushmeja Replies: 21 Views: 22971 |
![]() |
I would agree with the previous posters that your pics indicate that what you have is almost certainly glass due to the bubble inclusions.
My word of advice to you would be to stick to sellers loca ... |
|
![]() |
|
kushmeja Replies: 17 Views: 60072 |
![]() |
This is my favorite specimen from our Georgia mineral collections, and one of top 5 favorites overall. This Turgite has a rainbow of exceptionally bright colors & excellent form. It is from the Sk ... | |
All times are GMT - 5 Hours |