| 1. | Most strontium is found in the minerals celestite and strontianite.
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| 2. | Yet by 1883, the demand on strontianite had begun to shrink.
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| 3. | Associated minerals include strontianite, dawsonite and calcite.
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| 4. | At the beginning of the 19th century Drensteinfurt obtained some wealth through Strontianite mining.
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| 5. | Strontianite occurs in several different pyramidal forms.
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| 6. | Formerly, strontianite was also mined and used as a whitener for the sugar industry.
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| 7. | The mining of strontianite in Germany ended when mining of the celestine deposits in Gloucestershire started.
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| 8. | Strontianite is almost always electron beams.
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| 9. | For strontianite the effect is weak, with 2V larger for violet light than for red light r < v.
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| 10. | "' Strontianite "'( O 3 ) is an important raw material for the extraction of strontium.
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