Not pretty, but a rare, huge and important old specimen. From the collection of J.C. Boyle who was the secretary of the Academy of Sciences and the Philadelphia Mineralogical Society along with such luminaries as Trudell and Vaux. Later sold by Schortmann's minerals and likely obtained from their purchases of Arthur Montgomery's stock. See the excellent article on the Pa. Brucites in Min Record. Collected in May 1926, the Lee's Mills location on the label is clearly the better known Texas, PA. locale. This huge mass of platy crystals are crude but does show many distinct faces also there is a little hydromagnesite present. I suspect a bit of careful prepping would better expose the crystals here but this is offered as a great example of a classic mineral specimen with important provenance.
An esthetic 2 tone (blue and creme) flowerlike display of barite crystals perched on a contrasting matrix of dark purple fluorite crystals and dark red-brown Sphalerite. Beautiful, old classic stuff, Ex John Marshall collection. By naked eye this is perfect damagewise, only with 10x magnification one tiny corner bruise can be found. In short this is really a fine specimen that shows very well and is now quite uncommon in any condition on todays market.
From the 70's vintage finds at this classic Northeastern location, this a very well presented specimen of top shelf quality. We have handled several good specimens with much larger crystals but this degree of completeness and perfection is unheard of. The main crystal is 3.6 CM long, complete all around, sharp and doubly terminated. Very well trimmed out, the crystals stand out from the matrix in an esthetic display. Not a colorful and flashy specimen, but incredible for the specie and location!
The very best example I have seen from this location. From the earliest finds here, this has been in at least 3 older collections before being added to John Marshall's. Striking and impressive with sharp, lusterous transparent and translucent blades in delicate rosettes having a 2nd generation crystallized over them. Individual crystals reach 4.5 CM. Pale blue to cream in color, in pristine condition, and simply esthetic. A fine addition for any California or Barite suite.
Epidote with Quartz
stock #AC 409
Green Monster Mountain, Prince of Wales Island, Prince of Wales -outer K
5.1 x 3.5 CM (miniature)
An super lustrous Epidote from Prince of Wales island, Alaska. This came from the stock of Schortmann minerals vintage 1960-64 and was part of the materials supplied by Ed Over. A very attractive specimen, there is contacting at the rear, but the display side is in excellent condition. Termination is composed of several parallel faces all of which are glasslike. The dark green of this comes alive with good lighting. A fine small classic US piece!
An early Pala, California piece ex John Marshall and C. Goodspeed collections. This specimen is well over 80 years old. In pristine condition with a classic well etched termination and gem clear with very pale color. Very cute classic crystal that is also affordable.
A very early specimen from the classic tri-state area ex. John H. Marshall collection. The matrix is all crystalized quartz well decorated with sharp Geothite that is red brown in color and shows perfectly the forms of the Marcasite crystals it has replaced. In good condition overall, there is a hard to spot repair where the specimen had cracked that probably dates to the time it was collected. 10x Magnification shows only a few chipped Geothite blades and a few quartz are bruised. By naked eye nothing is noticeable or distracting, and for such an old, delicate piece the condition is certainly fine. This would be an attractive addition to any good Tri-State suite.
A fine example of a rare good quality Fluorite from Michigan, ex. John H. Marshall Collection. Light mint green Fluorite cubes to 1 CM in size are on and partly overgrown by Siderite. The matrix is nearly pure Siderite and the Fluorites very glasslike. Minor edge chips seen with close examination but the largest prominent crystals are fine.