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ex. American Museum of Natural History
A superb thumbnail cluster of sharp, translucent snowy white harmotome crystals, from Sing Sing , NY. The old label from the Columbia College School of Mines, and the specific dig location, dates this to prior to 1900. The Columbia collection went to the AMNH, and from there it was exchanged into the collection of dealre/collector Lawrence Conklin. It is a superb harmotome no matter where its from, and I cannot recall seeing a better US example of the species either.
A superb old specimen showing classic twinning of the harmotome crystals as originally described for the species by the old German mineralogists, and shown in very old mineral prints. These specimens are admittedly somewhat exotic in terms of appreciation to non-German specialists, but are none the less desirable for the species because of the unusually well-pronounced twinning and, as well, remain a very rare old classic.....as you'd expect from the German suite of this particular collection, which was clearly its pride and joy
6.1 x 5.0 x 2.5 cm. A VERY RICH, old-time and classic specimen of glassy and lustrous, grayish-tan harmotome crystals from St. Andreasberg, Germany. An excellent zeolite plate from a famous locality.
6.0 x 4.5 x 2.6 cm. A classic and rich specimen of sharp, lustrous, porcelaneous, off-white harmotome crystals from the quarries at Strontian, Scotland. The large, well-terminated crystal is 2.0 cm. Ex. British Museum Collection.
10.8 x 10.6 x 3.9 cm. A remarkably large plate of this rare zeolite group member, hosting hundreds of sharp crystals. This is the type locality for the species, from 1801. Many crystals, to 5 or 6mm, are cyclic-twinned.
11.6 x 5.4 x 2.4 cm. A striking cabinet combination specimen from an uncommon locality - Korsnas, Finland. Gemmy, greenish-yellow apophyllite crystals are richly concentrated or are scattered amongst sharp, pearlescent, grayish-white harmotome crystals. The harmotome crystals reach 1.0 cm. Yellow apophyllite is rare, worldwide. Ex. John Ydren Collection.
8.3 x 4.5 x 3.3 cm. A remarkably rich and superb specimen of this rare zeolite group member, hosting hundreds of sharp, highly lustrous crystals. This is the Type Locality for the species, from 1801. Many crystals are cyclic-twinned and the large crystal is 1.0 cm. Classic, older material.
7.5 x 4.6 x 2.9 cm. A classic, old-time specimen of lustrous, pearlescent harmotome crystals to 1.0 cm on matrix from the Bellsgrove Mine at Strontian, Scotland. Harmotome is a rare zeolite group mineral and many of the crystals are cyclic twins. A fine piece. New ones came out recently in the late 1990s but the older ones, to my mind, are better. Ex. Jamie Bird Collection, a California collector from the 1960s-1980s.
5.9 x 4.1 x 3.0 cm. A classic, old-time specimen of lustrous, pearlescent harmotome crystals to 1.4 cm on mounded matrix from the Bellsgrove Mine at Strontian, Scotland. Harmotome is a rare zeolite group mineral and many of the crystals are cyclic twins, including the largest, prominently placed large crystal. A fine, showy piece. New ones came out recently in the late 1990s, but the older ones, to my mind, are better. Ex. Jamie Bird Collection, a California collector from the 1960s-1980s.
6.2 x 5.0 x 2.7 cm. This is a very rich old specimen, probably 100-200 years old now, that features classic twinned harmotome crystals. It is a beautiful, rich, and important example of this rare zeolite species from the single most important historic locale for this species.
7.7 x 4.8 x 3.9 cm. A classic, old-time specimen of lustrous, pearlescent harmotome crystals to 2.0 cm on mounded matrix from the Bellsgrove Mine at Strontian, Scotland. Harmotome is a rare zeolite group mineral and many of the crystals are cyclic twins, including the largest, prominently placed large crystal. A fine specimen. New ones came out recently in the late 1990s, but the older ones, to my mind, are better as they have more robust and isolated crystals as you see here. Ex. Jamie Bird Collection, a California collector from the 1960s-1980s.
A remarkably large plate of this rare zeolite group member, hosting hundreds of sharp crystals. This is the type locality for the species, from 1801, and this specimen would surely date to the 1800s. Many crystals, to 5 or 6mm , are cyclic-twinned.
ex. Philadelphia Academy of Natural Sciences
According to MINDAT this species was discredited after many years, only in 1997. It is now thought to be either barian Phillipsite-Ca or calcian Harmotome - though I have not analysed this specimen to see which of these close relatives it trends to most. Originally described from Buck Creek Mine (Cullakenee Mine), Buck Creek, Clay Co., North Carolina, this locality. At the time, obviously, it was thought fairly important as it was owned by the great 1800's collector G. J. Brush who gave his collection to Yale...and then the Academy must have traded it from Yale to obtain a sample! All Content and Design ©1996-2012 The ArkenstonePowered by http://mineralwebsites.comMineral Specimens by species; or by specimen id. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
share specimen![Harmotome from Shaft No. 5, Croton Aqueduct, Ossining (Sing Sing), Westchester County, New York [db_pics/new2010/D10101b.jpg]](db_pics/new2010/D10101b.jpg)
![Harmotome from Shaft No. 5, Croton Aqueduct, Ossining (Sing Sing), Westchester County, New York [db_pics/new2010/D10101d.jpg]](db_pics/new2010/D10101d.jpg)
![Harmotome from Shaft No. 5, Croton Aqueduct, Ossining (Sing Sing), Westchester County, New York [db_pics/new2010/D10101c.jpg]](db_pics/new2010/D10101c.jpg)
![HARMOTOME (twinned) from St. Andreasberg, Harz Mtns., Germany [db_pics/pics/lc441a.jpg]](db_pics/pics/lc441a.jpg)
![HARMOTOME (twinned) from St. Andreasberg, Harz Mtns., Germany [db_pics/pics/lc441b.jpg]](db_pics/pics/lc441b.jpg)
![HARMOTOME (twinned) from St. Andreasberg, Harz Mtns., Germany [db_pics/pics/lc441c.jpg]](db_pics/pics/lc441c.jpg)
![HARMOTOME (twinned) from St. Andreasberg, Harz Mtns., Germany [db_pics/pics/lc441d.jpg]](db_pics/pics/lc441d.jpg)
![Harmotome from St Andreasberg, St Andreasberg District, Harz Mts, Lower Saxony, Germany [db_pics/mdpics/MD-118021a.jpg]](db_pics/mdpics/MD-118021a.jpg)
![Harmotome from Strontian, North West Highlands (Argyllshire), Scotland, UK [db_pics/mdpics/MD-187662a.jpg]](db_pics/mdpics/MD-187662a.jpg)
![Harmotome from St Andreasberg, St Andreasberg District, Harz Mts, Lower Saxony, Germany [db_pics/mdpics/MD-190502a.jpg]](db_pics/mdpics/MD-190502a.jpg)
![Harmotome from St Andreasberg, St Andreasberg District, Harz Mts, Lower Saxony, Germany [db_pics/mdpics/MD-190502b.jpg]](db_pics/mdpics/MD-190502b.jpg)
![Harmotome, Apophyllite-(KF) from Korsnäs, Vaasa, Länsi-Suomen Lääni, Finland [db_pics/mdpics/MD-207488a.jpg]](db_pics/mdpics/MD-207488a.jpg)
![Harmotome from St Andreasberg, St Andreasberg District, Harz Mts, Lower Saxony, Germany [db_pics/mdpics/MD-211583a.jpg]](db_pics/mdpics/MD-211583a.jpg)
![Harmotome from St Andreasberg, St Andreasberg District, Harz Mts, Lower Saxony, Germany [db_pics/mdpics/MD-211583b.jpg]](db_pics/mdpics/MD-211583b.jpg)
![Harmotome from Bellsgrove Mine (Bellsgrove Opencut), Strontian, North West Highlands (Argyllshire), Scotland, UK [db_pics/mdpics/MD-217423a.jpg]](db_pics/mdpics/MD-217423a.jpg)
![Harmotome from Bellsgrove Mine (Bellsgrove Opencut), Strontian, North West Highlands (Argyllshire), Scotland, UK [db_pics/mdpics/MD-217423b.jpg]](db_pics/mdpics/MD-217423b.jpg)
![Harmotome from Bellsgrove Mine (Bellsgrove Opencut), Strontian, North West Highlands (Argyllshire), Scotland, UK [db_pics/mdpics/MD-227546a.jpg]](db_pics/mdpics/MD-227546a.jpg)
![Harmotome from Bellsgrove Mine (Bellsgrove Opencut), Strontian, North West Highlands (Argyllshire), Scotland, UK [db_pics/mdpics/MD-227546b.jpg]](db_pics/mdpics/MD-227546b.jpg)
![Harmotome from St Andreasberg, St Andreasberg District, Harz Mts, Lower Saxony, Germany [db_pics/mdpics/MD-231193a.jpg]](db_pics/mdpics/MD-231193a.jpg)
![Harmotome from Bellsgrove Mine (Bellsgrove Opencut), Strontian, North West Highlands (Argyllshire), Scotland, UK [db_pics/mdpics/MD-266936a.jpg]](db_pics/mdpics/MD-266936a.jpg)
![Harmotome from Bellsgrove Mine (Bellsgrove Opencut), Strontian, North West Highlands (Argyllshire), Scotland, UK [db_pics/mdpics/MD-266936b.jpg]](db_pics/mdpics/MD-266936b.jpg)
![Harmotome from St. Andreasberg, Harz Mountains, Lower Saxony, Germany (TYPE LOCALITY) [db_pics/pics/oldeuro-81a.jpg]](db_pics/pics/oldeuro-81a.jpg)
![Harmotome from St. Andreasberg, Harz Mountains, Lower Saxony, Germany (TYPE LOCALITY) [db_pics/pics/oldeuro-81b.jpg]](db_pics/pics/oldeuro-81b.jpg)
![Harmotome from St. Andreasberg, Harz Mountains, Lower Saxony, Germany (TYPE LOCALITY) [db_pics/pics/oldeuro-81c.jpg]](db_pics/pics/oldeuro-81c.jpg)
![Wellsite from Buck Creek Mine (Cullakenee Mine), Buck Creek, Clay Co., North Carolina (TYPE LOCALITY) [db_pics/pics/pas-134a.jpg]](db_pics/pics/pas-134a.jpg)
![Wellsite from Buck Creek Mine (Cullakenee Mine), Buck Creek, Clay Co., North Carolina (TYPE LOCALITY) [db_pics/pics/pas-134b.jpg]](db_pics/pics/pas-134b.jpg)