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Improving Mindat.orgHematite needle ore
19th May 2012 19:12 UTCDon Tracy
19th May 2012 20:21 UTCUwe Kolitsch Manager
I have never heard of a "needle ore" variety of hematite. Are there photos on Mindat or elsewhere?
19th May 2012 21:31 UTCMark Heintzelman 🌟 Expert
Perhaps you are mistakingly using that term and actually referring to "Pencil ore", like the famed materials from Michigan USA and the Cumbria England?
I've heard some use the term "needle ore" before for such material, but that term does generally refer to something altogether different, as Uwe noted.
Local "colorful" terminology is kinda hard to nail down and keep strait. : )
MRH
20th May 2012 01:13 UTCDana Slaughter 🌟 Expert
20th May 2012 04:46 UTCDavid Garske
Dave
20th May 2012 10:01 UTCMark Heintzelman 🌟 Expert
I know Michigan and Thungrian (Ilfeld) Pyrolusite is found in large beds and masses, and when broken it produces VERY fine needles, that is the needle ore I was always aware of.
Goethite also has it's fair share of colorful terms as well, pipe ore, iron bombs, iron helmets, brown hematite, bog ore . . . the list goes on.
I suppose it is a thankless task to attempt to nail down such local terms to any strict definition. : )
MRH
20th May 2012 10:16 UTCDavid Von Bargen Manager
It was a fairly common term for the Wisconsin and Michigan iron mines.
Mindat photos
http://www.mindat.org/photo-220175.html
http://www.mindat.org/photo-220164.html
http://www.mindat.org/photo-257515.html
Limonitic ore Canada 1890
http://books.google.com/books?id=AXZBAAAAIAAJ&pg=PA454&dq=needle+ore+hematite&hl=en&sa=X&ei=3re4T6DfG6S26QGrsPHTCg&ved=0CD0Q6AEwAQ#v=onepage&q=needle%20ore%20hematite&f=false
"and when these balls are fibrous in texture, the fibres radiating from the centre to the circumference, it is called needle ore"
http://books.google.com/books?id=riYaAAAAYAAJ&pg=PA175&dq=needle+ore+hematite&hl=en&sa=X&ei=3re4T6DfG6S26QGrsPHTCg&ved=0CEkQ6AEwAw#v=onepage&q=needle%20ore%20hematite&f=false
"and long, thin columnar, known as Needle Ore"
Tasmania
http://books.google.com/books?id=0UghAQAAIAAJ&pg=PA38&dq=needle+ore+hematite&hl=en&sa=X&ei=lrq4T6TcD8HG6gGt1IFX&ved=0CEEQ6AEwATgy#v=onepage&q=needle%20ore%20hematite&f=false
20th May 2012 16:30 UTCDana Slaughter 🌟 Expert
20th May 2012 16:32 UTCMark Heintzelman 🌟 Expert
I do certainly concur needle ore seems rather the default term. Even gives me pause as I wonder how it is "pencil ore" came to use, as it seems to be one in the same quality of ore (?).
As an interesting aside: Looking through old regional references to ore deposits (these references included), we can note that in many mining districts the local colors terms used for particular deposits sometimes aslo differentiated the quality of ore. A very useful reference for miners and managers who were actively exploiting these variable deposits and something I think might also be good to include in the references here (though it may be impractical to do so thoroughly, perhaps just a few observations at more noted localities).
The description pages for most of these old terms here on mindat are very much lacking. Members here seem reluctant to flesh out these pages or provide photo references for them. I understand a glossary of terms is currently in the works here at mindat. Once completed, perhaps it would be best for searches of such terms be directed there, rather than have individual mineral pages? I can envision edits and updates to the glossary alone will invariably lead to notably conflicting data being presented here somewhere down the road.
MRH
A latter thought: Is it possible to link the entries and edits of the glossary of terms to use as the description text on the corresponding mineral pages in these cases?
20th May 2012 16:59 UTCDavid Von Bargen Manager
from the facility which it splits into long fragments, which are sometimes used for marking sandstones.
http://books.google.com/books?id=435RAAAAMAAJ&pg=PA175&dq=pencil+ore+hematite&hl=en&sa=X&ei=VBK5T4-iHcnB6AHPx4TRCg&ved=0CE4Q6AEwAjgK#v=onepage&q=pencil%20ore%20hematite&f=false
hard ore with conical fractures. Sometimes used as burnishers.
http://books.google.com/books?id=WaQLAAAAMAAJ&pg=PA144&dq=pencil+ore+hematite&hl=en&sa=X&ei=jhO5T7SZL_DG6AHa54HtCg&ved=0CEAQ6AEwAA#v=onepage&q=pencil%20ore%20hematite&f=false
20th May 2012 17:52 UTCMark Heintzelman 🌟 Expert
Blast ore and "ruddle", two additional terms I've not crossed paths with before! :)
I once tried to research and determine what exact mineral and quality thereof were actually being referred to by the wildly variable nomenclature used in the historical accounts of local spar industry here in PA. More head pain than head way on that account. I finally came to the conclusion in this case that these were more marketing terms than mining ones, and that "dental Spar" here may be an entirely different mineral than what was available and being exploited for such purposes somewhere else. :)
MRH
20th May 2012 18:28 UTCDana Slaughter 🌟 Expert
21st May 2012 12:37 UTCRock Currier Expert
21st May 2012 13:00 UTCRock Currier Expert
21st May 2012 16:10 UTCUwe Kolitsch Manager
17th Nov 2014 23:36 UTCJeff "Mouse" Jessie
http://www.ebay.com/itm/GIANT-MUSEUM-SPECIMEN-HEMATITE-PENCIL-NEEDLE-ORE-EGREMONT-CUMBRIA-ENGLAND-/281488357139?_trksid=p2054897.l4275
Now I know prices can be volatile on some stuff but has this Pencil / Needle Ore become that rare or sought after to command prices of $1.20 P/G to $1.80 P/G? Help me out here guys I want to price this stuff fair.
a couple of Pictures of the stuff we have;
Thanks for any help you can give,
Mouse @ Accent On Nature
www.accentonnaturerocks.com
accentonnature@gmail.com
18th Nov 2014 01:26 UTCKeith A. Peregrine
Keith
18th Nov 2014 01:48 UTCJeff "Mouse" Jessie
Medium are about 3-3.5" by 2" by 1.5"
Small about 4" by .5" by .5"
I agree large specimens were usually more, but I was hoping to determine a fair gram weight price as a baseline, I have $810 on the largest which is 810 grams.
18th Nov 2014 02:56 UTCDana Slaughter 🌟 Expert
This material should not be priced by the gram. It is common enough that I've sold pieces of the same size for
under $50...especially given that there is no mine attribution. Your specimens are average pieces---the type that can still be found on the dumps of UP mines today. The price that you mention should be reserved for especially fine pieces with good luster, form, "terminations" and mine attribution.
Best regards,
Dana
18th Nov 2014 03:24 UTCMark Heintzelman 🌟 Expert
MRH
PS: I see the mineral page for needle ore is currently directed to the entire Hematite gallery, including Kidney ore and Iron rose var. etc. I really don't see much point in doing that. (sorry Dana, seems you beat me to it!)
18th Nov 2014 03:35 UTCAlfredo Petrov Manager
18th Nov 2014 04:28 UTCMark Heintzelman 🌟 Expert
18th Nov 2014 04:55 UTCDoug Daniels
18th Nov 2014 21:13 UTCRock Currier Expert
.
19th Nov 2014 00:47 UTCJeff "Mouse" Jessie
OK, so I have 2 pieces that fit the characteristics of the Pencil / Needle Ore mentioned by most of you, and I am assuming, perhaps to my detriment, that even though they fit the variety and one is lustrous enough to be a proper display specimen that most of the pieces here should be like $10 - $30 and the two that are should be like $50 - $75 for the large, lustrous one and perhaps $25 - $30 for the small, dull one?
Piece one;
19th Nov 2014 03:21 UTCDoug Daniels
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Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2024, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: April 19, 2024 19:53:08