Dougie Webb
Sr. Member
- Joined
- Jun 14, 2019
- Messages
- 402
- Reaction score
- 704
- Golden Thread
- 0
- Location
- Stone Mountain, Georgia
- Detector(s) used
- Fisher F5
Garrett Ace 200
- Primary Interest:
- Metal Detecting
I posted about this the other day, but have since learned a few things new and taken better pictures, as well as cut a window into it.
Sorry about the novel, but I'm really fascinated by this thing and can't seem to even get close to ID'ing it.
1. Rock registers as iron on the Ace 200. Solid 18-20. But, barely magnetic. Had to hold magnet on string to get it to attract.
2. Size is about 1.5 inches. Heavy, with Specific Gravity between 5-7.
3. Found behind where an old house stood until 1960. Land has been undisturbed since. No industrial activity, etc, in the area.
4. NEW: Does not spark at all when I cut into with angle grinder.
5. NEW: Relatively soft - able to scratch with the end of a pocket knife.
6. I've ruled out slag because it's much denser and has no air pockets, and no spark.
7. Ruled out magnetite because it is just barely magnetic, and no spark when cut.
8. Ruled out hematite, as it leaves a definite gray streak. And again, no spark.
9. Have considered both manganese and zinc, as they have both been found in this general area of Georgia. But they are generally found in smaller quantities in other rocks.
10. Meteorite seems unlikely, as only 20 have ever been found in Georgia, plus it's only weakly attracted to a magnet - and the streak seems too strong for what I've researched about meteorites.
Rock appears darker than this, but I've edited the photos to bring out detail a little better.
A view of the window I cut
Sorry about the novel, but I'm really fascinated by this thing and can't seem to even get close to ID'ing it.
1. Rock registers as iron on the Ace 200. Solid 18-20. But, barely magnetic. Had to hold magnet on string to get it to attract.
2. Size is about 1.5 inches. Heavy, with Specific Gravity between 5-7.
3. Found behind where an old house stood until 1960. Land has been undisturbed since. No industrial activity, etc, in the area.
4. NEW: Does not spark at all when I cut into with angle grinder.
5. NEW: Relatively soft - able to scratch with the end of a pocket knife.
6. I've ruled out slag because it's much denser and has no air pockets, and no spark.
7. Ruled out magnetite because it is just barely magnetic, and no spark when cut.
8. Ruled out hematite, as it leaves a definite gray streak. And again, no spark.
9. Have considered both manganese and zinc, as they have both been found in this general area of Georgia. But they are generally found in smaller quantities in other rocks.
10. Meteorite seems unlikely, as only 20 have ever been found in Georgia, plus it's only weakly attracted to a magnet - and the streak seems too strong for what I've researched about meteorites.
Rock appears darker than this, but I've edited the photos to bring out detail a little better.
A view of the window I cut
- I went ahead and busted this wide open since I realized that the "window" I cut wouldn't accurately reflect the inside because the blade of the angle grinder sheared the metal, and made it look quite different. As heavy as it is, I think, as Charlie said, that it should be some sort of iron ore. Still getting thrown by the gray streak it leaves - because if it were a chunk of magnetite this size, it would much more easily attract a magnet. This barely does.
