Museum Collection
This specimen is part of the museum collection catalog.
Not for Sale.
Graphite (Native Carbon)
Colombo Mines, Sri Lanka
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| Classification |
Element |
| Tags |
Native Element
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| Origin Location |
Colombo Mines, Sri Lanka |
| Description |
This old collection specimen is a fine sample of native carbon on the form of graphite; an important ore source of this mineral that has been known and extracted since antiquity. Unlike diamonds, which have the same pure carbon composition, graphite forms in sheets with weak bonds along one plane, allowing the dark grey to black colored material to slough off very easily as a dark powder, which is why it is used in pencil lead, and also used as a dry lubricant for it's slipperiness. This attractive specimen also features a unique collector card, deeply stained with carbon, which specifies it came from "Ceylon" the classical name for the island kingdom of Sri Lanka, which dates this mineral to at least before the year 1970 when the name changed, (and probably much earlier, based on the distinctive collection card). |
| Luster |
Greasy |
| Luster (Groundmass) |
Not noted, see photo. |
| Optical Phenomena |
Not noted, see photo. |
| Mineral Group / Note |
Not noted, check reference links below. |
| Handling |
No special handling is required. |
| Modifications |
No modifications. |
| Size Group |
Small Cabinet |
| Weight |
Not weighed precisely yet, please inquire. |
| Dimensions |
6.00 cm * 6.00 cm * 3.00 cm |
| Quantity |
1 Specimen |
| Mineral List |
Graphite: C
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* Formula chemical names are auto-generated - may be incorrect on complex formulas.
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Specimen Analysis |
Color Table
Colors found in this specimen image are shown below. Higher number indicates greater concentration of that color.
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Similarly Colored Minerals:
Minerals with similar color profiles are shown below.
How it Works
Baryte Baryte Diorite var. Bordeaux Kyanite Apatite Ice |
Elements in this Specimen:
Elements that are part of the official chemical structure of the minerals occurring in this specimen are indicated below.
How it Works
Element List:
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Minerals with Similar Chemistry:
Minerals that are similar in terms of their chemical makeup are shown below.
How it Works
This Mineral Formula Similar Mineral Formula
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Mineral Group:
Search the catalog for minerals that share the same group as this specimen:
How it Works
Fleischers Group(s):
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| Tools |
Edit Specimen
Search Wikipedia: Graphite (Native Carbon) (Wiki)
Search Mindat: Graphite (Native Carbon)
Search Web Mineral DB: Graphite (Native Carbon)
Search for Handbook of Mineralogy: Graphite (Native Carbon)
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