described as new species from the Tingelstadtjern deposit by Raade &
Tysseland in 1975. Althausite has also been found in the Overntjern
deposit. The mineral occurs as grey to brownish cleavable masses, and may
alter to apatite.
magnesium-carbonate, described as a new species in 1971 by Gunnar Raade
from the Dypingdal deposit. Dypingite is closely related to
hydromagnesite, and is at 150 oC altered to this mineral. Dypingite is
found at the surface of thr pits, and is considered to be a post-mining
mineral formed at low temperatures.
HEMATITE is found
in many of the deposits. The best crystals are found in the Dypingdal
quarry, where they occur as rhombohedral to pseudo-octahedral crystals
embedded in serpentine. The crystals have a good metallic luster and are
relatively easily prepared outof the soft serpentine, resulting in
attractive display specimens. The largest known crystals were probably
around 15 cm in diameter.
described in 1986 as a new species from the Tingelstadtjern deposit by
Raade. Heneuite occurs as pale blue-green, nodular masses measuring
several cm accross, usually surrounded by a rim of althausite whivh, in
turn, is surrounded by apatite. Heneuite contains microscopic blue
inclusions of yhe phosphate analogue of ellenberite. Heneuite has good
cleavage along (010).
described as a new species in 1979 from the Tingelstadtjern deposit by
Raade and Mladeck. Holtedahlite occurs exclusively as a colorless massive
mineral, associated with althausite and apatite. Holtedahlite is not
easily disguishable from apatite.
described as a new species in 1842 by Hochstetter. Hydrotalcite is a
common alteration product of serpentine. However unesthetic in itself, in
combination with the nice green serpentine and black metallic hematite
crystals, as found in Dypingdal, it still has a certain quality.
a commonly occurring clinochlore variety in the magnesite/serpentine
been found as a thin, white covering on serpentine in the Tingelstadtjern
as colorless, white, pale yellow or pale pink fine to coarse crystalline.
Cleavage planes in coarse crystalline magnesite can be up to 20-30 cm.
described simulteneously from Snarum and Amity, new York as a new species
in 1941 by Frondel. Manasseite is frequently found intergrown with
hydrotalcite at the Dypingdal deposit, and are virtually not
distinguishable from each other. The color is white to bluish-white.
been found at both the Nedre and Øvre Dypingdal deposits, and at the
Tingelstadtjern deposit. At the Nedre Dypingdal deposit szaibelyite has
been found as veins in magnesite. At the Tingelstadtjern deposit
szaibelyite has been found as thin veins in althausite.
as antigorite, lizardite and chrysotile in the deposits. It has not been
specified which type(s) of chrysotile has been found: ortho-, para- or
clinochrysotile. Antigorite is by far the most abundantly occurring type,
but chrysotile is common. To what extent lizardite occurs has not been
described. The serpentine can be found as yellow to green masses of
considerable size, or as more fine grained mixtures with magnesite. The
purity of the serpentine varies considerably, from quarry to quarry, but
also in one and the same deposit. Remarkable is the occurring of
serpentine as pseudomorphoses after forsterite (olivin) crystals. In the
Dypingdal deposit are altered crystals up to 10 cm found, often with a
core of unaltered forsterite. In the Øvre Langerudsgruve are pseudomorphs
found as 20 cm long needles with a diameter of 1-2 cm. These needles are
randomly orientated in layers parallel to the layering of magnesite and
ARAGONITE, BRUCITE, CALCITE, DOLOMITE, ILMENITE, MAGNESIOFERRITE,
MAGNETITE, MUSCOVITE, PYRITE, SPINEL, TALCUM,