| 1. | Cyanotrichite forms velvety radial acicular crystal aggregates of extremely fine fibers.
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| 2. | It occurs as prismatic to acicular transparent yellow to white orthorhombic crystals.
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| 3. | It is a dark grey metallic mineral which forms acicular prismatic monoclinic crystals.
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| 4. | Tight acicular radiating clusters and sphericules are common forms.
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| 5. | It crystallizes as monoclinic prisms which occur as apple green acicular radiating clusters.
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| 6. | Acicular ferrite is also characterised by high angle boundaries between the ferrite grains.
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| 7. | It is bright yellow in colour and usually has an acicular crystal habit.
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| 8. | There are about 6-8 radial spines per areole which are acicular.
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| 9. | Zinkenite occurs as acicular needle-like crystals.
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| 10. | The state of aggregation for zorite is acicular.
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