1. Lithium tetrafluoroberyllate takes on the same crystal form as the mineral phenacite. 2. Mineral collectors are lucky to find it in good enough crystal form . 3. Although over 20 other crystal forms have been noted; rarely in microcrystalline aggregates. 4. Sometimes the crystals form a fine feathery mass which has been called plumosite. 5. The crystals form on the outside of the bacteria and then drop off. 6. However, the Johann Friedrich Christian Hessel from a consideration of observed crystal forms . 7. These crystals form a barrier and slow the advancement of caries. 8. The team of researchers used native selenomethionine-containing protein that yielded crucial crystal forms . 9. She extracted tannin in crystal form from green tea in 1930. 10. When the solution cools down, we see sugar crystals form .