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Mark Heintzelman's mindat.org home page

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zzzzzzzzz . . . Eliza and Daddy Lazing on a Sunday Afternoon

Mark R. Heintzelman

Registered member, joined prior to 15th Oct 2005

Mark Heintzelman has uploaded:
296 Specimen Photos
4 Locality Photos
2 Other Photos
 
World-wide systematic mineral collector since 1978, mindat contributer since Jan. 2004, focused on the mineralogy of Pennsylvania.

Now with the new and improved Mindat gallery, I've finally decided to contribute specimen pics from my other locality collections and world wide systematics, for localities which could use some additional representation. You can still view ONLY the Pennsylvania specimens by choosing the 'Mineral Name/Photo Title' option under 'Which Order' and typing "Pennsylvania" in the 'Keyword Box'. MRH

Messaging Statistics

Total messages posted:1,940
New threads started:67
First message posted:13th May 2007
Latest message posted:25th Apr 2024

My Latest Discussions and Replies

Sep 2023Fluorite image: Color profile damaged or over saturatedPosted by Mark Heintzelman in Photos.May 2023More likely Mcguinnessite rather than NakauriitePosted by Mark Heintzelman in Photos.Feb 2023🦟 BUG: Discussion Groups - Can we no longer access posts pre 2021?Posted by Mark Heintzelman. 4 replies in General.Jan 2023Canadian experts needed, Old South Ham specimen?Posted by Mark Heintzelman. 6 replies in General.Jan 2023Imperial TopazPosted by Mark Heintzelman. 60 replies in Minerals.Nov 2022Wondering it this image should be made "User Only"Posted by Mark Heintzelman. 2 replies in Photos.Nov 2022Should we enforce boundaries over first identified mineral on images? Ex: Fluorite or CalcitePosted by Mark Heintzelman. 12 replies in Photos.Nov 2022Classic association at Cornwall Mine, PA is Pyrite, not ChalcopyritePosted by Mark Heintzelman. 13 replies in Photos.Oct 2022Specimen not from Cedar Hill Quarry.Posted by Mark Heintzelman. 10 replies in Photos.Sep 2022Hyatt Mine, Talcville, St. Lawrence Co., New York, USAPosted by Mark Heintzelman. 7 replies in Localities.Jul 2022Archived Strunz 8th seems to be missing True Zeolite - Mordenite GroupPosted by Mark Heintzelman. One reply in Improving Mindat.org.Jun 2022Lime Crest Quarry, NJ some locality string issues/inconsistenciesPosted by Mark Heintzelman. 16 replies in Improving Mindat.org.Mar 2022Is it appropriate to attribute an erratic (railway bedding stone) to the locality it was found?Posted by Mark Heintzelman. 8 replies in Photos.Feb 2022Need locality help from Midwest U.S. experts on this old mislabeled specimenPosted by Mark Heintzelman. 11 replies in Identity Help.Feb 2022Species I.D. entry needs correctingPosted by Mark Heintzelman. One reply in Photos.Jan 2022Celestine specimen is not from Bell's MillPosted by Mark Heintzelman. 3 replies in Photos.Jan 2022Photo titled vanadinite, with no vanadinite present in the photo.Posted by Mark Heintzelman. 2 replies in Photos.Jan 2022Photo with damaged color profile?Posted by Mark Heintzelman. One reply in Photos.Dec 2021Altenberg Sauconite specimen likely originally from the collection of John Birkinbine (b. 1844, d. 1915)Posted by Mark Heintzelman. 3 replies in Photos.Mar 2021Mineralogical Record Label Archive no longer accessible?Posted by Mark Heintzelman. 13 replies in Education.

 
 
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