Hot Rocks are NOT fresh "hot" meteorites. They are instead a term applied to
terrestrial minerals that register (hot) on a metal detector or are 'attracted' to
a test magnet and to those that visually appear metallic or meteoritic.
But upon further inspection, the "hot" expectation quickly cools to a "false alarm."
They have been 'cursed at' and thrown away by gold and
meteorite hunters for years. ( However, as more is learned about varied
meteoritic characteristics, more meteorites been discovered among
discarded "hot rocks.') These pages will examine the most common Hot Rocks that
are often found.
Robert Verish writes:
I would like to take this opportunity to personally thank Troy
Bell, for his efforts in trying to determine the
origin of a particular type of meteor-wrong that is
commonly seen on eBay. Troy found his first specimen
in the gravel of a parking lot near where he lives in
Texas. When Troy told me that the gravel was a
typical "slag", I told him to try and find more of
this LBR (Little Black Rock) and to take some samples
of the slag gravel. He found 2 more "little black
rocks", which he sent to me, along with samples of the
My examination confirmed that the LBRs and the slag
have a common origin. In addition, these LBRs are
made from the same material that I have encountered
numerous times from people wanting their "meteorites"
identified. And I'm sure many on this List have
encountered this, as well. Lately, a third of the
meteor-wrongs that I have encountered are of this
"sulfide-rich" material. Although there appears to be
various sources for this material, I have always
contended that this was waste material from an ore
smelting process [slag]. But now, Troy's observant
eye has found the "smoking gun" evidence that confirms
that this material is a slag.
This confirmation also raises the concern that some of
these LBRs could have elevated concentrations of
arsenic and lead.
The following images show a cut surface of this
material. Because of the above concern, BE ADVISED -
to never DRY cut or grind this material, and to treat
the cuttings and coolant with caution.
The interior "looks like" a natural sulfide mineral
with a highly specular, metallic luster. But it is
not a metal. Mostly crystalline with needle-shaped
laths (an atypical crystal habit for sulfides). The
exterior has a patina. Having been exposed to the
forces of weathering, and over time, the sulfide-rich
rock has formed a black tarnish.
Close-up of the cut surface. Locally vesicular;
cavities will show cleavage for these synthetic
(man-made) crystals. There are some inclusions of
As mentioned earlier, this kind of meteor-wrong has
long been seen on eBay, but typically being auctioned
as "Arizona ?? Meteorite"!!
Now that it has been identified, my curiosity about
this material has been satisfied, and I will now move
on to the next "mystery rock" (hopefully, it will be a
real meteorite;-). But in the meanwhile, it may prove
beneficial (since this stuff is so widespread) to have
this "identified" material on a meteor-wrong web page
in order to educate future meteor-wrong sellers.
More Hot Rocks - Click Here
IF YOU HAVE A "HOT ROCK" , THINK HOW EDUCATIONAL TO SHARE YOU EXPERIENCE & PHOTO WITH OTHERS!
ENOUGH THINKING! EMAIL ME TODAY...