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Improving Mindat.orgChromite from Montana location problem

13th Oct 2019 00:54 UTCRolf Luetcke Expert

A friend just gave me a specimen of chromite from the Mouat-Sampson Mine, Stillwater Complex, Stillwater Co. Montana.   
Trying to get the right location for certain I looked at the Stillwater Complex  page and the Mouat-Sampson mine was not listed even though it is there.   
Looking at the other chromite from there it is listed under the Stillwater Complex but with it the Nye was listed on one location but not the other.   The cross referencing doesn't work since the Nye is missing on the Mouat-Sampson Mine.  Could this be something I am missing or should the Nye be added???
Would appreciate someone looking into this because it is not correct as it is now.

13th Oct 2019 16:12 UTCRolf Luetcke Expert

Kevin,
That is not what I mean.  Go to Stillwater Complex and see at the bottom list of mines and the mine is not there.   That is what I mean.  I found the mine no problem but the cross references are not there and as I had said, the Nye is missing and I didn't want to add it myself since I have no idea why it is missing.
Rolf

13th Oct 2019 18:26 UTCRolf Luetcke Expert

Still trying to figure this one out.
If you go to Stillwater County, scroll down and there are two Stillwater Complex areas listed, one under Nye, the other not, leaves me scratching my head.   Are there two Stillwater Complexes in different places???  Wish someone could explain this to me. 
Each has one Chromite photo, looks like the same material to me but they don't seem to be on the same complex except both photos are shown under chromite only under the Stillwater County location.
Wish someone could explain this.

13th Oct 2019 21:56 UTCKevin Conroy Expert

Rolf, sorry, now I understand what you're looking for.

The short answer: your specimen without "Nye" on the label is correct.

The longer answer: the Stillwater Complex is very large.   Depending on where in the Complex the mine/occurrence is, you can have different place names associated with the location.   If you REALLY want to dig deeper into it different researchers have different opinions on what should be called what, and have subdivided areas (and named them to fit their results).   Of course there's disagreement between researchers, so take it for what it is.   Anyway, if you want to read up on the Complex here are a couple of sites you can check out:

13th Oct 2019 22:43 UTCJolyon Ralph Founder

There were multiple Stillwater Complex pages and I've now combined them all into one.

15th Oct 2019 14:54 UTCRolf Luetcke Expert

Jolyon,
Thank you for the help.  I had gone and looked at all the pages and so had Mary and we both thought it was a mess with a ton of duplication.   Hope your help makes it easier to navigate.  I just had no idea about the location and just saw it was a mess.
Thank you.

14th Oct 2019 15:11 UTCKevin Conroy Expert

I'm not sure how far Mindat wants to delve into the Stillwater Complex, but there is some information available through the USGS for this area.   I don't have ArcGIS software so I'm not sure if the information is a duplication of what Mindat already has, or if there's some different stuff.   To see more go to: https://pubs.er.usgs.gov/publication/sir20145183

Starting on page 4 of the downloadable document is a description of the files in the database.   The point features include info on "mine tunnels, shafts, adits and portals".   Whether or not this will provide reliable information for some/all of the Mindat localities that lack coordinates ... who knows?   Here's a description of what's in the data:

Mine Tunnels, Shafts, Adits, and Portals, Stillwater Complex, Montana (still_mines) The [still_mines] point feature class provides spatial and descriptive data for mine tunnels, shafts, adits, and portals in the Stillwater Complex. The data show locations of underground PGE, chrome, and copper-nickel exploration and mining. This dataset was created by digitizing points on-screen using a geographic information system (GIS). Locations were sourced from georeferenced maps or photo imagery of the Stillwater Complex. The shapefile was then converted to a geodatabase feature class. Data sources are listed in the Ref_short field, and full references are listed in the “References Cited” section of this report. The attribute table fields and their definitions are listed in table 10. This dataset is not meant to be displayed at larger than 1:12,000.


 
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