Help mindat.org|Log In|Register|
Home PageMindat NewsThe Mindat ManualHistory of MindatCopyright StatusManagement TeamContact UsAdvertise on Mindat
Donate to MindatSponsor a PageSponsored PagesTop Available PagesMindat AdvertisersAdvertise on MindatThe Mindat Store
Minerals by PropertiesMinerals by ChemistryRandom MineralSearch by minIDLocalities Near MeSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportAdd Glossary Item
StatisticsMember ListBooks & MagazinesMineral Shows & EventsThe Mindat DirectoryHow to Link to MindatDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery
Loading...

Mark Heintzelman's Mindat Home Page

My PageMy PhotosMy GalleriesMy FavouritesMy Sponsored PagesMy EventsContact Me

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

Mark R. Heintzelman

Registered member joined prior to 15th Oct 2005 (unrecorded)

Mark Heintzelman has uploaded:
282 Mineral Photos
3 Locality Photos
1 Other Photo
 
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

 

Favourite Photos

LNT-JHCPyrite : FeS2

Maibolte Quarry, Dörentrup, Lemgo, Eastern Westphalia, North Rhine-Westphalia, Germany

Field of View: 6 mm
Largest Crystal Size: 4 mm

A twinned "Iron Cross", almost perfect, made of the interpenetration of two pyritohedrons, with 90 ° rotation around the axis of gemination [001]. Since this occurs in the class 2/m, with no 4-fold rotation axes, the [001] twin axis gives the mineral apparent 4-fold symmetry about 3 perpendicular axes. Nikon D90, bellows, Schneider Kreuznach Componon-S 50mm f/2.8. Opening focal used: 4.7. Cllection and photo of Gianfranco Ciccolini.

Mindat.org Photo of the Day - 28th Apr 2015
Photo ID: 679610     Uploaded by: Gianfranco Ciccolini   View Count: 646   Approval status: Public galleries    Type: Photo - 4288 x 2848 pixels (12.2 Mpix)

9MF-R47Calcite (Var: Calcite Satin Spar) : CaCO3

Alston Moor District, Cumbria, England, UK

Dimensions: 62 mm x 29 mm x 30 mm

Created using Mineraldesk Orbitvu Studio 360 degree spin system.
Copyright: © D.Ralph      Photo ID: 675256     Uploaded by: Jolyon & Katya Ralph   View Count: 173   Approval status: Public galleries    Type: Animation - 39 frames, 2048 x 1792 pixels (3.7 Mpix)

VJ7-Y2DCatapleiite : Na2Zr(Si3O9)·2H2O

Alluaiv Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia

Dimensions: 75 mm x 82 mm x 43 mm
Largest Crystal Size: 40 mm

Transparent, well-formed Catapleiite crystals intergrowth from small Catapleeite pegmatite deep inside of Umbozerskii mine. It had produced limited quantity of very high grade specimens of the mineral.


Mindat.org Photo of the Day - 21st Mar 2014
Photo ID: 577347     Uploaded by: Viktor Grishin   View Count: 760   Approval status: Public galleries    Type: Photo - 4361 x 3384 pixels (14.8 Mpix)

NVR-YGPFettelite : [Ag6As2S7][Ag10HgAs2S8] , Proustite : Ag3AsS3

Glasberg quarry, Nieder-Beerbach, Mühltal, Odenwald, Hesse, Germany

proustite and fettelite, fov 1.6mm
Photo ID: 541120     Uploaded by: Joy Desor   View Count: 447   Approval status: Public galleries    Type: Photo - 3456 x 3456 pixels (11.9 Mpix)

CLF-X75Millerite : NiS

Gap Mine, Gap, Bart Township, Lancaster Co., Pennsylvania, USA

Millerite, 5 cm by 7 cm. Formerly in the Florian A. Cajori collection. Cajori was a famous Swiss-American mathematician who acquired this specimen in 1927. Currently in the collection of Joseph Polityka.
Copyright: © Joseph Polityka      Photo ID: 533324     Uploaded by: Joseph Polityka   View Count: 359   Approval status: Public galleries    Type: Photo - 1402 x 1545 pixels (2.2 Mpix)

2WW-7F7Brucite : Mg(OH)2

Bazhenovskoe deposit, Asbest, Sverdlovskaya Oblast', Middle Urals, Urals Region, Russia

Brucite from Terra Mineralia Museum in Freiberg, Germany. Size 20*14*4cm
Copyright: © Dmitry Tonkacheev      Photo ID: 508338     Uploaded by: Dmitry Tonkacheev   View Count: 288   Approval status: Public galleries    Type: Photo - 2916 x 4098 pixels (11.9 Mpix)

Delegates enjoying the crystal models at Kruger-Haus Museum Freiberg

Delegates enjoying the superb display of 760 Krantz crystal models at Kruger-Haus Museum, Freiberg.
Photo ID: 485338     Uploaded by: Roy Starkey   View Count: 875   Approval status: Public galleries    Type: Photo - 512 x 342 pixels (0.2 Mpix)

4V1-QTHFluorite : CaF2

Schrammacher north-west face, Innervals, Vals valley, North Tyrol, Tyrol, Austria

The very pink colored fluorite has a remarkable 16 cm edge length and a weight of 3.4 kg. The crystal comes from the 600 meter high and nearly vertical Schrammacher northwest face in Vals Valley, Tyrol.
My friend Vincenz Eller found this exceptional fluorite in the summer of 1990. This photo was taken for the Extra-Lapis # 35 "Fluorit" because of an article about the Finder. In the background, the picturesque valley of Vals and the dangerous Schrammacher wall, from which the crystal comes!
This treasure is family-owned since the discovery and there the piece will remain!
Copyright: © Robert Brandstetter      Photo ID: 482909     Uploaded by: Robert Brandstetter   View Count: 619   Approval status: Public galleries    Type: Photo - 1842 x 1492 pixels (2.7 Mpix)

D25-QFLGalena : PbS

Joplin Field, Tri-State District, Jasper Co., Missouri, USA

Crystal of 4 x 3.5 cm. Beautiful crystal of joplin field. It is an old piece from the collection of Arthur Montgomery and then to the museum of minerals from the University of Arizona.

Frédéric VERRIER Collection & Photo (Canon 40 D + 50 mm macro : 1/15s - f14)
Copyright: © Verrier.Frédéric      Photo ID: 472131     Uploaded by: Frédéric Verrier   View Count: 535   Approval status: Public galleries    Type: Photo - 2205 x 2068 pixels (4.6 Mpix)

WNU-GGAPyromorphite : Pb5(PO4)3Cl

Heilige Dreifaltigkeit Mine, Zschopau, Erzgebirge, Saxony, Germany

Olive green pyromorphite from its type locality.
The specimen is almost completely build up from typical interconnected pyromorphite crystals.
Specimen is 8 x 5 cm
Photo ID: 469508     Uploaded by: Tim Welting   View Count: 209   Approval status: Public galleries    Type: Photo - 1772 x 2362 pixels (4.2 Mpix)
Photos 1 to 10 of 50
1 2 3 4 5
Next Page

Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2015, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: September 4, 2015 19:58:19