Graphite: Limberg quarry, Pargas (Parainen), Finland

Click on the small map to see a map of
Pargas, Finland and the Limberg quarry
collecting site.

Aggregate of graphite rosettes in HCl-etched calcite.
John A. Jaszczak collection #1394.
SEM photo by Ruth I. Kramer.

18 micrometer graphite sphere,
etched from calcite. Note the individual hexagonal
graphite crystals on the surface with their basal planes
lying parallel to the surface of the sphere.
John A. Jaszczak collection #1394.
SEM photo by Ruth I. Kramer. Close-up of graphite sphere showing
individual hexagonal graphite crystals on the
surface with their basal planes lying parallel
SEM photo by Ruth I. Kramer.

Graphite aggregates of both roses and spheres,
with iron sulfides, etched from calcite.
John A. Jaszczak collection #1394.
SEM photo by Ruth I. Kramer.


Graphite crystal with twin on {11-21} in calcite. John A. Jaszczak collection #1387 and photo.	Graphite crystal showing pronounced development of pyramidal as well as basal faces. John A. Jaszczak collection #1393 and photo.

Dr. Kimmo Pietikainen is greatfully acknowledged for supplying bulk material from which these specimens were obtained.

References:

METZGER, A.A.T. (1954) The Deposit of Crystalline Limestone of Pargas-Parainen. In: The Mines and Quarries of Finland. E. Aurola, ed. Geological Survey of Finland, Helsinki. pp. 53-58.

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18 micrometer graphite sphere, etched from calcite. Note the individual hexagonal graphite crystals on the surface with their basal planes lying parallel to the surface of the sphere. John A. Jaszczak collection #1394. SEM photo by Ruth I. Kramer.	Close-up of graphite sphere showing individual hexagonal graphite crystals on the surface with their basal planes lying parallel SEM photo by Ruth I. Kramer.