Wednesday, December 5, 2012

Maryland Minerals: D to L

This is the second part of  our  compendium for the Maryland Minerals website seeking to list all mineral species and varieties of species known to have occurred in  Maryland. As in the first A to C portion, the  name of any major mineral family to which a species or variety belongs appears in parenthesis next to the species/variety name. Duly noted on the list also are a relatively few questionable or unverified occurrences.  Also included and similarly noted are the names of  species that the I.M.A. has since discredited. Images of Maryland-collected specimens arranged by county for many of these species are at the website's  Maryland-collected minerals slideshow.

For nearly all of  information in this compendium, we are grateful to the following sources.

  • Minerals of Maryland by Charles Ostrander and Walter E. Price, Jr.,  Natural History Society of Maryland, 1940
  • Minerals of the Washington, D.C. Area by Lawrence R. Bernstein, Maryland Geological Survey, 1980
  • Smithsonian National Museum of Natural History Database.
  • Mindat
Continuing through the end of the alphabet, subsequent posts will cover the names of additional minerals that have been collected in Maryland.

Here is the list from D to F:

Deweylite
Dickite
Diopside
Dolomite
Dravite (member of Tourmaline Group)
Dumortierite
Electrum
Enstatite
Epidote (Member of Epidote Group)
Erythrite
Fibrolite (variety of Sillimanite)
Flint (variety of Quartz)
Fluorite
Fluorapatite
Franklinite
Fuchsite (var. of Muscovite, a member of Mica Group)
Gahnite
Galena
Garnierite
Genthite
Garnierite
Genthite 
Glauconite (member of Mica Group)
Glaucophane (member of Amphibole Group)
Goethite
Gold
Graphite
Grossular (member of Garnet Group)
Gymnite (see Deweylite)
Gypsum
Halite
Halloysite (member of Serpentine Group)
Harmotome (member of Zeolite Group)
Hematite
Hemimorphite
Hessonite (var. of Grossular, a member of Garnet Family
Heulandite (Member of Zeolite Group)
Hisingerite (?)
Hornblende
Huntite
Hyalite (synonym of Opal-AN)
Hydromagnesite
Hydrotalcite (member of hydtrotalcite group)
Hydrozincite
Hyspersthene (name discredited by IMA)
Ice
Iceland Spar (a distinct form of Calcite)
Idaite
Jarosite
Idocrase (synonym for Vesuvianite)
Ilmenite (member of Ilmenite Group)
Iron (in meteorites)
Jasper (var. of Chalcedony (var. of Quartz)
Jefferisite (synonym for Vermiculite)
Kammererite (synonym for Chromian Clinochlore)
Kaolinite
Kyanite
Labradorite (member of Feldspar Group)
Lanthanite
Laumontite (member of Zeolite Group)
Leucoxene
Limonite
Linarite
Linnaeite (member of Linnaeite Group)
Lipscombite
Ludjibaite
          

2 comments:

  1. While perhaps not as good as finding them yourself, these sites have some wonderful specimens for sale:

    Crystal Classics
    Kristalle

    ReplyDelete
  2. Great list of minerals as they are a crucial part of our living world.

    ReplyDelete