Table 5. CIP W Normative Mineral Composition of Florida Pumice Artifacts.

 

Sample Location Qz Co Or Ab An Di Hy ol Mt Il Ap D.L*

Southern Florida

HSDI

SOMO” JO SAIGO.LS TWOIWdHOOTD

MDC 1.567.6b Miami Circle 28.2 0.3 20.7 35.7 9.3 0.0 2.1 0.0 1.9 0.8 1.1 85.5
MDC 1.166.4 Miami Circle 33.6 0.0 22.6 34.9 4.5 1.7 0.2 0.0 1.0 0.2 1.3 91.1
MDC 1.222.11a Miami Circle 21.5 0.0 7.8 26.0 27.2 3.6 8.6 0.0 3.9 0.9 0.5 56.0
MDC 1,472.4 Miami Circle 36.5 0.6 22.8 30.8 7.0 0.0 0.9 0.0 0.9 0.3 0.4 90.1
MDC 1.893.1 Miami Circle 35.9 0.9 25.1 31.6 4.4 0.0 0.7 0.0 0.7 0.3 0.6 92.5
HMSF896 Brickell Point 38.2 2.8 23.4 30.8 1.0 0.0 0.7 0.0 0.7 0.2 2.2 93.4
FBAR75.62.10.1 Higgs Site 37.9 0.7 25.6 29.7 4.0 0.0 1.0 0.0 0.7 0.3 0.2 93.2
FBAR72.20.534.1 Indian Key 35.2 0.0 23.8 31.8 6.8 0.8 0.4 0.0 0.6 0.2 0.3 90.9
FLMNHA16262a Fort Center 36.6 0.0 25.0 32.5 4.6 0.0 0.5 0.0 0.5 0.2 0.2 94.1
FLMNH98576 Bear Lake 1 36.1 0.0 17.0 34.5 8.9 0.3 1.4 0.0 1.0 0.4 0.4 87.7
HMSF582.1 Brickell Point 30.2 0.0 25.0 33.4 6.0 2.4 0.0 0.0 1.5 0.6 0.9 88.6
HMSF1018.18 Granada 26.6 0.0 12.8 44.1 12.1 1.1 1.0 0.0 1.2 0.5 0.6 83.5
HMSF2942.1 Honey Hill 36.0 2.0 149 343 7.8 0.0 1.5 0.0 1.3 0.5 2.0 85.2
HMSF427.5 Custom House 3.0 0.0 6.2 19.2 22.3 18.1 14.8 0.0 3.8 8.7 4.2 28.3
FBAR74.2.10.8 Stock Island 35.3 0.0 25.1 29.9 6.1 1.9 0.2 0.0 0.6 0.3 0.6 90.3
FBARO0.14.47.1 Deering Estate 37.7 2.3 23.8 29.5 4.5 0.0 1.0 0.0 0.7 0.3 0.4 90.9
FBAR76.209.1.1 | Shark Butchery 35.8 0.7 26.2 31.5 4.2 0.0 0.6 0.0 0.5 0.2 0.5 93.4
FBAR99.65.7.1 Whitebelt 1 ** ** kK oe ** *x* x * * ** ** OK
HMSF1874.1b Sutton Site 20.2 1.4 5.7 28.9 27.8 0.0 9.4 0.0 3.8 0.9 1.9 54.8
Northwestern Florida

EGLIN056 Wynnhaven Beach 32.0 9.6 20.8 14.9 3.5 0.0 15.1 0.0 2.4 1.1 0.6 67.7
EGLIN198 Wynnhaven Beach 0.0 0.0 148 39.3 19.3 3.6 6.2 6.1 3.4 4.6 2.8 54.1
EGLIN742 Wynnhaven Beach 36.0 2.7 21.0 29.4 1.4 0.0 3.0 0.0 4.4 0.3 1.8 86.4

                

Explanation of abbreviations: Qz— quartz; Co ~ corundum; Or — orthoclase; Ab — albite; An— anorthoite; Di— diopside; Hy — hypersthene; Ol-— olivine; Il— ilmenite; Ap — apatite. Normative
mineral compositions are based upon the Fe,O,/FeO ratios recommended by Middlemost (1989) for volcanic rocks, using the TAS subdivisions shown in Figure 8

* D.I. — Differentiation Index (Thornton and Tuttle 1960). The sum of all salic normative minerals quartz+albite+orthoclase +nephlene+tleucite+kalsilite).
** Normative mineral composition was not calculated due to a high LOI value.

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